diff --git a/docs/m2met2/Contact.md b/docs/m2met2/Contact.md
index 3097ad791..d0811c650 100644
--- a/docs/m2met2/Contact.md
+++ b/docs/m2met2/Contact.md
@@ -5,5 +5,5 @@ If you have any questions about M2MET2.0 challenge, please contact us by
 
 |                Wechat group                |
 |:------------------------------------------:|
-<!-- | <img src="images/wechat.png" width="300"/> | -->
+| <img src="images/qrcode.png" width="300"/> | 
 
diff --git a/docs/m2met2/Introduction.md b/docs/m2met2/Introduction.md
index eac9eb6b5..99a426f2a 100644
--- a/docs/m2met2/Introduction.md
+++ b/docs/m2met2/Introduction.md
@@ -25,4 +25,4 @@ Interested participants, whether from academia or industry, must register for th
 
 [M2MET2.0 Registration](https://docs.google.com/forms/d/e/1FAIpQLSf77T9vAl7Ym-u5g8gXu18SBofoWRaFShBo26Ym0-HDxHW9PQ/viewform?usp=sf_link)
 
-Within three working days, the challenge organizer will send email invitations to eligible teams to participate in the challenge. All qualified teams are required to adhere to the challenge rules, which will be published on the challenge page. Prior to the ranking release time, each participant must submit a system description document detailing their approach and methods. The organizer will select the top three submissions to be included in the ASRU2023 Proceedings. 
+Within three working days, the challenge organizer will send email invitations to eligible teams to participate in the challenge. All qualified teams are required to adhere to the challenge rules, which will be published on the challenge page. Prior to the ranking release time, each participant must submit a system description document detailing their approach and methods. The organizer will select the top ranking submissions to be included in the ASRU2023 Proceedings. 
diff --git a/docs/m2met2/_build/doctrees/Contact.doctree b/docs/m2met2/_build/doctrees/Contact.doctree
index e3f579ff5..877cb6868 100644
Binary files a/docs/m2met2/_build/doctrees/Contact.doctree and b/docs/m2met2/_build/doctrees/Contact.doctree differ
diff --git a/docs/m2met2/_build/doctrees/Introduction.doctree b/docs/m2met2/_build/doctrees/Introduction.doctree
index 84f1baaa6..f44d936c0 100644
Binary files a/docs/m2met2/_build/doctrees/Introduction.doctree and b/docs/m2met2/_build/doctrees/Introduction.doctree differ
diff --git a/docs/m2met2/_build/doctrees/environment.pickle b/docs/m2met2/_build/doctrees/environment.pickle
index 4e86ccaa1..a71853ab4 100644
Binary files a/docs/m2met2/_build/doctrees/environment.pickle and b/docs/m2met2/_build/doctrees/environment.pickle differ
diff --git a/docs/m2met2/_build/html/Contact.html b/docs/m2met2/_build/html/Contact.html
index eafd2d5b8..c1f69e317 100644
--- a/docs/m2met2/_build/html/Contact.html
+++ b/docs/m2met2/_build/html/Contact.html
@@ -129,8 +129,11 @@
 <tr class="row-odd"><th class="head text-center"><p>Wechat group</p></th>
 </tr>
 </thead>
+<tbody>
+<tr class="row-even"><td class="text-center"><p><a class="reference internal" href="_images/qrcode.png"><img alt="_images/qrcode.png" src="_images/qrcode.png" style="width: 300px;" /></a></p></td>
+</tr>
+</tbody>
 </table>
-<!-- | <img src="images/wechat.png" width="300"/> | -->
 </section>
 
 
diff --git a/docs/m2met2/_build/html/Introduction.html b/docs/m2met2/_build/html/Introduction.html
index 2ddafe22c..c89e665fa 100644
--- a/docs/m2met2/_build/html/Introduction.html
+++ b/docs/m2met2/_build/html/Introduction.html
@@ -150,7 +150,7 @@
 <h2>Guidelines<a class="headerlink" href="#guidelines" title="Permalink to this heading">¶</a></h2>
 <p>Interested participants, whether from academia or industry, must register for the challenge by completing the Google form below. The deadline for registration is May 15, 2023.</p>
 <p><a class="reference external" href="https://docs.google.com/forms/d/e/1FAIpQLSf77T9vAl7Ym-u5g8gXu18SBofoWRaFShBo26Ym0-HDxHW9PQ/viewform?usp=sf_link">M2MET2.0 Registration</a></p>
-<p>Within three working days, the challenge organizer will send email invitations to eligible teams to participate in the challenge. All qualified teams are required to adhere to the challenge rules, which will be published on the challenge page. Prior to the ranking release time, each participant must submit a system description document detailing their approach and methods. The organizer will select the top three submissions to be included in the ASRU2023 Proceedings.</p>
+<p>Within three working days, the challenge organizer will send email invitations to eligible teams to participate in the challenge. All qualified teams are required to adhere to the challenge rules, which will be published on the challenge page. Prior to the ranking release time, each participant must submit a system description document detailing their approach and methods. The organizer will select the top ranking submissions to be included in the ASRU2023 Proceedings.</p>
 </section>
 </section>
 
diff --git a/docs/m2met2/_build/html/_images/qrcode.png b/docs/m2met2/_build/html/_images/qrcode.png
new file mode 100644
index 000000000..68984beac
Binary files /dev/null and b/docs/m2met2/_build/html/_images/qrcode.png differ
diff --git a/docs/m2met2/_build/html/_sources/Contact.md.txt b/docs/m2met2/_build/html/_sources/Contact.md.txt
index 3097ad791..d0811c650 100644
--- a/docs/m2met2/_build/html/_sources/Contact.md.txt
+++ b/docs/m2met2/_build/html/_sources/Contact.md.txt
@@ -5,5 +5,5 @@ If you have any questions about M2MET2.0 challenge, please contact us by
 
 |                Wechat group                |
 |:------------------------------------------:|
-<!-- | <img src="images/wechat.png" width="300"/> | -->
+| <img src="images/qrcode.png" width="300"/> | 
 
diff --git a/docs/m2met2/_build/html/_sources/Introduction.md.txt b/docs/m2met2/_build/html/_sources/Introduction.md.txt
index eac9eb6b5..99a426f2a 100644
--- a/docs/m2met2/_build/html/_sources/Introduction.md.txt
+++ b/docs/m2met2/_build/html/_sources/Introduction.md.txt
@@ -25,4 +25,4 @@ Interested participants, whether from academia or industry, must register for th
 
 [M2MET2.0 Registration](https://docs.google.com/forms/d/e/1FAIpQLSf77T9vAl7Ym-u5g8gXu18SBofoWRaFShBo26Ym0-HDxHW9PQ/viewform?usp=sf_link)
 
-Within three working days, the challenge organizer will send email invitations to eligible teams to participate in the challenge. All qualified teams are required to adhere to the challenge rules, which will be published on the challenge page. Prior to the ranking release time, each participant must submit a system description document detailing their approach and methods. The organizer will select the top three submissions to be included in the ASRU2023 Proceedings. 
+Within three working days, the challenge organizer will send email invitations to eligible teams to participate in the challenge. All qualified teams are required to adhere to the challenge rules, which will be published on the challenge page. Prior to the ranking release time, each participant must submit a system description document detailing their approach and methods. The organizer will select the top ranking submissions to be included in the ASRU2023 Proceedings. 
diff --git a/docs/m2met2/images/qrcode.png b/docs/m2met2/images/qrcode.png
new file mode 100644
index 000000000..68984beac
Binary files /dev/null and b/docs/m2met2/images/qrcode.png differ
diff --git a/docs/m2met2_cn/_build/doctrees/environment.pickle b/docs/m2met2_cn/_build/doctrees/environment.pickle
index 91ebda67a..bb82bcbbe 100644
Binary files a/docs/m2met2_cn/_build/doctrees/environment.pickle and b/docs/m2met2_cn/_build/doctrees/environment.pickle differ
diff --git a/docs/m2met2_cn/_build/doctrees/简介.doctree b/docs/m2met2_cn/_build/doctrees/简介.doctree
index bcc005b07..26017348b 100644
Binary files a/docs/m2met2_cn/_build/doctrees/简介.doctree and b/docs/m2met2_cn/_build/doctrees/简介.doctree differ
diff --git a/docs/m2met2_cn/_build/doctrees/联系方式.doctree b/docs/m2met2_cn/_build/doctrees/联系方式.doctree
index df477c8d5..e7e788911 100644
Binary files a/docs/m2met2_cn/_build/doctrees/联系方式.doctree and b/docs/m2met2_cn/_build/doctrees/联系方式.doctree differ
diff --git a/docs/m2met2_cn/_build/html/_images/qrcode.png b/docs/m2met2_cn/_build/html/_images/qrcode.png
new file mode 100644
index 000000000..68984beac
Binary files /dev/null and b/docs/m2met2_cn/_build/html/_images/qrcode.png differ
diff --git a/docs/m2met2_cn/_build/html/_sources/简介.md.txt b/docs/m2met2_cn/_build/html/_sources/简介.md.txt
index f43dbabec..5afb6a099 100644
--- a/docs/m2met2_cn/_build/html/_sources/简介.md.txt
+++ b/docs/m2met2_cn/_build/html/_sources/简介.md.txt
@@ -29,4 +29,4 @@ IASSP2022 M2MeT挑战的侧重点是会议场景，它包括两个赛道：说
 
 [M2MET2.0报名](https://docs.google.com/forms/d/e/1FAIpQLSf77T9vAl7Ym-u5g8gXu18SBofoWRaFShBo26Ym0-HDxHW9PQ/viewform?usp=sf_link)
 
-主办方将在3个工作日内通过电子邮件通知符合条件的参赛团队，团队必须遵守将在挑战网站上发布的挑战规则。在排名发布之前，每个参赛者必须提交一份系统描述文件，详细说明使用的方法和模型。主办方将选择前三名纳入ASRU2023论文集。
\ No newline at end of file
+主办方将在3个工作日内通过电子邮件通知符合条件的参赛团队，团队必须遵守将在挑战网站上发布的挑战规则。在排名发布之前，每个参赛者必须提交一份系统描述文件，详细说明使用的方法和模型。主办方将排名前列的队伍纳入ASRU2023论文集。
\ No newline at end of file
diff --git a/docs/m2met2_cn/_build/html/_sources/联系方式.md.txt b/docs/m2met2_cn/_build/html/_sources/联系方式.md.txt
index 5c65ca01d..de43593fc 100644
--- a/docs/m2met2_cn/_build/html/_sources/联系方式.md.txt
+++ b/docs/m2met2_cn/_build/html/_sources/联系方式.md.txt
@@ -5,5 +5,5 @@
 
 |              M2MET2.0竞赛官方微信群         |
 |:------------------------------------------:|
-<!-- | <img src="images/wechat.png" width="300"/> | -->
+| <img src="images/qrcode.png" width="300"/> |
 
diff --git a/docs/m2met2_cn/_build/html/简介.html b/docs/m2met2_cn/_build/html/简介.html
index b53850647..1aa4f2989 100644
--- a/docs/m2met2_cn/_build/html/简介.html
+++ b/docs/m2met2_cn/_build/html/简介.html
@@ -153,7 +153,7 @@
 <h2>竞赛报名<a class="headerlink" href="#id3" title="此标题的永久链接">¶</a></h2>
 <p>来自学术界和工业界的有意向参赛者均应在2023年5月15日及之前填写下方的谷歌表单：</p>
 <p><a class="reference external" href="https://docs.google.com/forms/d/e/1FAIpQLSf77T9vAl7Ym-u5g8gXu18SBofoWRaFShBo26Ym0-HDxHW9PQ/viewform?usp=sf_link">M2MET2.0报名</a></p>
-<p>主办方将在3个工作日内通过电子邮件通知符合条件的参赛团队，团队必须遵守将在挑战网站上发布的挑战规则。在排名发布之前，每个参赛者必须提交一份系统描述文件，详细说明使用的方法和模型。主办方将选择前三名纳入ASRU2023论文集。</p>
+<p>主办方将在3个工作日内通过电子邮件通知符合条件的参赛团队，团队必须遵守将在挑战网站上发布的挑战规则。在排名发布之前，每个参赛者必须提交一份系统描述文件，详细说明使用的方法和模型。主办方将排名前列的队伍纳入ASRU2023论文集。</p>
 </section>
 </section>
 
diff --git a/docs/m2met2_cn/_build/html/联系方式.html b/docs/m2met2_cn/_build/html/联系方式.html
index 249e5dd69..03e494b9c 100644
--- a/docs/m2met2_cn/_build/html/联系方式.html
+++ b/docs/m2met2_cn/_build/html/联系方式.html
@@ -130,8 +130,11 @@
 <tr class="row-odd"><th class="head text-center"><p>M2MET2.0竞赛官方微信群</p></th>
 </tr>
 </thead>
+<tbody>
+<tr class="row-even"><td class="text-center"><p><a class="reference internal" href="_images/qrcode.png"><img alt="_images/qrcode.png" src="_images/qrcode.png" style="width: 300px;" /></a></p></td>
+</tr>
+</tbody>
 </table>
-<!-- | <img src="images/wechat.png" width="300"/> | -->
 </section>
 
 
diff --git a/docs/m2met2_cn/images/qrcode.png b/docs/m2met2_cn/images/qrcode.png
new file mode 100644
index 000000000..68984beac
Binary files /dev/null and b/docs/m2met2_cn/images/qrcode.png differ
diff --git a/docs/m2met2_cn/简介.md b/docs/m2met2_cn/简介.md
index f43dbabec..5afb6a099 100644
--- a/docs/m2met2_cn/简介.md
+++ b/docs/m2met2_cn/简介.md
@@ -29,4 +29,4 @@ IASSP2022 M2MeT挑战的侧重点是会议场景，它包括两个赛道：说
 
 [M2MET2.0报名](https://docs.google.com/forms/d/e/1FAIpQLSf77T9vAl7Ym-u5g8gXu18SBofoWRaFShBo26Ym0-HDxHW9PQ/viewform?usp=sf_link)
 
-主办方将在3个工作日内通过电子邮件通知符合条件的参赛团队，团队必须遵守将在挑战网站上发布的挑战规则。在排名发布之前，每个参赛者必须提交一份系统描述文件，详细说明使用的方法和模型。主办方将选择前三名纳入ASRU2023论文集。
\ No newline at end of file
+主办方将在3个工作日内通过电子邮件通知符合条件的参赛团队，团队必须遵守将在挑战网站上发布的挑战规则。在排名发布之前，每个参赛者必须提交一份系统描述文件，详细说明使用的方法和模型。主办方将排名前列的队伍纳入ASRU2023论文集。
\ No newline at end of file
diff --git a/docs/m2met2_cn/联系方式.md b/docs/m2met2_cn/联系方式.md
index 5c65ca01d..de43593fc 100644
--- a/docs/m2met2_cn/联系方式.md
+++ b/docs/m2met2_cn/联系方式.md
@@ -5,5 +5,5 @@
 
 |              M2MET2.0竞赛官方微信群         |
 |:------------------------------------------:|
-<!-- | <img src="images/wechat.png" width="300"/> | -->
+| <img src="images/qrcode.png" width="300"/> |