diff --git a/XmacsLabs/X202303.tm b/XmacsLabs/X202303.tm
index d4e6029..33bac57 100644
--- a/XmacsLabs/X202303.tm
+++ b/XmacsLabs/X202303.tm
@@ -7,13 +7,126 @@
 
   <section|Welcome>
 
-  <section|Topic: how to create a pull-request>
-
-  https://gitee.com/XmacsLabs/planet/issues
+  <section|Topic: How to create a pull request in Gitee?>
 
   https://gitee.com/XmacsLabs/planet/issues/I6JNE2
 
-  <section|Topic: purchase a Loongson laptop>
+  <subsection|Some simple preparations>
+
+  1) You already have a Gitee account.
+
+  2) Open <strong|the terminal> and run the following command:
+
+  <\verbatim-code>
+    git --version
+  </verbatim-code>
+
+  <subsection|Generate and add SSH public key>
+
+  1) We need to generate SSH key by run the following command:
+
+  <\verbatim-code>
+    ssh-keygen -t ed25519 -C "xxxxx@xxxxx.com" \ 
+
+    # Generating public/private ed25519 key pair...
+  </verbatim-code>
+
+  * The xxxxx@xxxxx.com here is just the name of the generated SSH key, and
+  does not restrict or require it to be specifically named as a certain
+  mailbox.
+
+  * Just press Enter three times, and the ssh key will be generated, and
+  <strong|no password required>.
+
+  \;
+
+  2) We can print SSH public key using the <verbatim|cat> command:
+
+  <\verbatim-code>
+    cat ~/.ssh/id_ed25519.pub
+  </verbatim-code>
+
+  3) Copy the SSH public key to your clipboard.
+
+  4) In the upper-right corner of any page of Gitee, click your profile
+  photo, then click<nbsp><strong|Settings>. In the side bar, click
+  <strong|SSH public key>.
+
+  5) Paste your public key into the Key field. Click <strong|Add SSH key>.
+
+  <subsection|Git clone>
+
+  * I already have the developer permission of the warehouse
+  "XmacsLabs/planet".
+
+  1) Go to the <strong|Code> page of "XmacsLabs/planet", click the
+  <strong|Clone/Download> button, switch to SSH, and copy it.
+
+  2) Return to your home directory in The Terminal using the <verbatim|cd>
+  command.
+
+  3) We need to clone the warehouse by run the following command:
+
+  <\verbatim-code>
+    git clone git@gitee.com:XmacsLabs/planet.git
+  </verbatim-code>
+
+  (If prompted, enter YES.)
+
+  <subsection|Git add>
+
+  1) Open the planet folder by file manager, and paste the files to be added
+  here.
+
+  2) Enter the directory in The Terminal using the <verbatim|cd> command:
+
+  <\verbatim-code>
+    cd planet
+  </verbatim-code>
+
+  3) We can see which changes have been staged using the <verbatim|git
+  status> command.
+
+  4) Use the <verbatim|git status> command:
+
+  <\verbatim-code>
+    git add XmacsLabs/X202303.tm
+  </verbatim-code>
+
+  <subsection|Git config>
+
+  1) Add your own username using the <verbatim|git config> command:
+
+  <\verbatim-code>
+    git config --global user.name "\<#58A8\>\<#5BA2\>\<#5B9E\>\<#9A8C\>\<#5BA4\>\<#673A\>\<#5668\>\<#4EBA\>"
+  </verbatim-code>
+
+  2) Add your own E-mail using the <verbatim|git config> command:
+
+  <\verbatim-code>
+    git config --global user.email ``bot@xmacs.net"
+  </verbatim-code>
+
+  3) You can view which changes have been done using the <verbatim|cat>
+  command:
+
+  <\verbatim-code>
+    cat ~/.gitconfig
+  </verbatim-code>
+
+  <subsection|Git commit>
+
+  1) You can make a commit using the <verbatim|git commit -m> command:
+
+  <\verbatim-code>
+    git commit -m "2023\<#5E74\>\<#7B2C\>\<#4E09\>\<#6B21\>\<#7814\>\<#8BA8\>\<#4F1A\>"
+  </verbatim-code>
+
+  <subsection|Git push>
+
+  1) You can make a push using the <verbatim|git push origin main> command.
+
+  <section|Topic: to purchase a Loongson laptop>
 </body>
 
 <\initial>
@@ -26,8 +139,15 @@
 <\references>
   <\collection>
     <associate|auto-1|<tuple|1|2>>
+    <associate|auto-10|<tuple|3|4>>
     <associate|auto-2|<tuple|2|2>>
-    <associate|auto-3|<tuple|3|?>>
+    <associate|auto-3|<tuple|2.1|2>>
+    <associate|auto-4|<tuple|2.2|2>>
+    <associate|auto-5|<tuple|2.3|3>>
+    <associate|auto-6|<tuple|2.4|3>>
+    <associate|auto-7|<tuple|2.5|4>>
+    <associate|auto-8|<tuple|2.6|4>>
+    <associate|auto-9|<tuple|2.7|4>>
   </collection>
 </references>
 
@@ -39,8 +159,41 @@
       <no-break><pageref|auto-1><vspace|0.5fn>
 
       <vspace*|1fn><with|font-series|<quote|bold>|math-font-series|<quote|bold>|2<space|2spc>Topic:
-      how to create a pull-request> <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+      How to create a pull request in Gitee?>
+      <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
       <no-break><pageref|auto-2><vspace|0.5fn>
+
+      <with|par-left|<quote|1tab>|2.1<space|2spc>Some simple preparations
+      <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+      <no-break><pageref|auto-3>>
+
+      <with|par-left|<quote|1tab>|2.2<space|2spc>Generate and add SSH public
+      key <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+      <no-break><pageref|auto-4>>
+
+      <with|par-left|<quote|1tab>|2.3<space|2spc>Git clone
+      <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+      <no-break><pageref|auto-5>>
+
+      <with|par-left|<quote|1tab>|2.4<space|2spc>Git add
+      <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+      <no-break><pageref|auto-6>>
+
+      <with|par-left|<quote|1tab>|2.5<space|2spc>Git config
+      <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+      <no-break><pageref|auto-7>>
+
+      <with|par-left|<quote|1tab>|2.6<space|2spc>Git commit
+      <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+      <no-break><pageref|auto-8>>
+
+      <with|par-left|<quote|1tab>|2.7<space|2spc>Git push
+      <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+      <no-break><pageref|auto-9>>
+
+      <vspace*|1fn><with|font-series|<quote|bold>|math-font-series|<quote|bold>|3<space|2spc>Topic:
+      to purchase a Loongson laptop> <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+      <no-break><pageref|auto-10><vspace|0.5fn>
     </associate>
   </collection>
 </auxiliary>
\ No newline at end of file