diff --git a/anolis-courses/cloud-native/compile_runD/step3.md b/anolis-courses/cloud-native/compile_runD/step3.md
index 0d2e07ee4de93e2ae70a9ee1526cdc31b88b3b4c..a2c9da794317b03a93e969d859058901d2a3d173 100644
--- a/anolis-courses/cloud-native/compile_runD/step3.md
+++ b/anolis-courses/cloud-native/compile_runD/step3.md
@@ -1,4 +1,5 @@
 1. 可以尝试修改runD的代码，可以修改一些日志输出或者不影响功能的地方, 比如:
+```s
 --- a/src/runtime-rs/crates/runtimes/virt_container/src/sandbox.rs
 +++ b/src/runtime-rs/crates/runtimes/virt_container/src/sandbox.rs
 @@ -135,7 +135,7 @@ impl Sandbox for VirtSandbox {
@@ -7,3 +8,4 @@
          self.hypervisor.start_vm(10_000).await.context("start vm")?;
 -        info!(sl!(), "start vm");
 +        info!(sl!(), "start vm for myself!");
+```
diff --git a/anolis-courses/cloud-native/compile_runD/step4.md b/anolis-courses/cloud-native/compile_runD/step4.md
index e609ee6f77f50b68f648ce8586d5b85d416d5e26..ee45bd69bd445fb7ad967e4ed3229d96dcba4756 100644
--- a/anolis-courses/cloud-native/compile_runD/step4.md
+++ b/anolis-courses/cloud-native/compile_runD/step4.md
@@ -3,13 +3,16 @@
 
 [[ container-image=cloud-native-registry.cn-shanghai.cr.aliyuncs.com/runtime/rund:shim-builder-latest ]]
 
-[[ nerdctl run --rm -i -v "${repo-root-dir}:${repo-root-dir}" \
+```s
+nerdctl run --rm -i -v "${repo-root-dir}:${repo-root-dir}" \
   -w "${repo-root-dir}/src/runtime-rs" \
   "${container-image}" \
-  bash -c "git config --global --add safe.directory ${repo-root-dir} && make -j8" ]]
+  bash -c "git config --global --add safe.directory ${repo-root-dir} && make -j8"
+```
 
 2. 上面编译需要一段时间，需要等编译完,然后运行下面的命令替换最新的runD，并运行查看日志结果
 [[ cp $repo-root-dir/src/runtime-rs/target/x86_64-unknown-linux-musl/release/containerd-shim-kata-v2 /opt/kata/bin/containerd-shim-rund-v2 ]]
+如果发现有file busy的错误，可能是存在当前正在运行的rund实例，需要把rund实例都删除掉
 
 [[ time nerdctl run --runtime io.containerd.rund.v2 busybox /bin/sh -c "uname -a" ]]
 
diff --git a/anolis-courses/cloud-native/running_runD/step4.md b/anolis-courses/cloud-native/running_runD/step4.md
index 899efa1747c9f54f7e7407fff2bf78c8f853ffbe..5127115a5dd3249b259ba54758b5e456956e2ab8 100644
--- a/anolis-courses/cloud-native/running_runD/step4.md
+++ b/anolis-courses/cloud-native/running_runD/step4.md
@@ -5,20 +5,26 @@
 [[ tar -zxvf crictl-v1.24.2-linux-amd64.tar.gz -C /usr/local/bin/ ]]
 
 3. 配置crictl命令
-[[ cat << EOF > /etc/crictl.yaml
+```s
+cat << EOF > /etc/crictl.yaml
 runtime-endpoint: unix:///run/containerd/containerd.sock
 image-endpoint: unix:///run/containerd/containerd.sock
 timeout: 10
 debug: false
-EOF ]]
+EOF
+```
+或者直接使用下面的链接进行下载配置文件
+[[ wget https://cloud-native.oss-cn-shanghai.aliyuncs.com/runtime/crictl.yaml ]]
+[[ cp crictl.yaml /etc/ ]]
 
 4. 使用crictl来pull需要启动的镜像
 [[ crictl pull busybox ]]
 
 5. 添加运行pod的配置文件
-[[ cat << EOF > sandbox-config.json
+```s
+cat << EOF > sandbox-config.json
 {
-    "metadata": {
+   "metadata": {
         "name": "test-sandbox",
         "namespace": "default",
         "attempt": 1,
@@ -32,7 +38,10 @@ EOF ]]
        }
     }
 }
-EOF ]]
+EOF
+```
+或者直接用下面的链接下载配置文件
+[[ wget https://cloud-native.oss-cn-shanghai.aliyuncs.com/runtime/sandbox-config.json ]]
 
 6. 使用rund来运行pod
 [[ crictl runp -r rund sandbox-config.json ]]