diff --git a/content/en/devops/_index.md b/content/en/devops/_index.md
index d8f617ec5..8dc5f66aa 100644
--- a/content/en/devops/_index.md
+++ b/content/en/devops/_index.md
@@ -22,7 +22,7 @@ section2:
         - content: <span>Integrate SonarQube</span> to implement source code quality analysis
         - content: <span>Support dependency cache</span> to accelerate build and deployment
         - content: <span>Provide dynamic build agents</span> to automatically spin up Pods as necessary
-    
+
     - title: Built-in Automated Toolkits
       image: /images/devops/Built-in-automated-toolkits.svg
       contentList:
@@ -30,7 +30,7 @@ section2:
         - content: <span>Binary-to-image</span> is the bridge between your artifact and a runnable image
         - content: <span>Support automatically building and pushing</span> images to any registry, and finally deploy them to Kubernetes
         - content: <span>Provide excellent recoverability and flexibility</span> as you can rebuild and rerun S2I / B2I whenever a patch is needed
-    
+
     - title: Use GitOps to implement DevOps, not just culture
       image: /images/devops/Clear-insight.svg
       contentList:
@@ -46,7 +46,7 @@ section3:
   image: /images/service-mesh/15.jpg
   content: Want to get started in action by following the hands-on lab?
   btnContent: Start Hands-on Lab
-  link:
+  link: https://kubesphere.io/docs/installation/install-devops/
   bgLeft: /images/service-mesh/3-2.svg
   bgRight: /images/service-mesh/3.svg
----
\ No newline at end of file
+---
diff --git a/content/en/observability/_index.md b/content/en/observability/_index.md
index 3d6fd98f0..e92d031f2 100644
--- a/content/en/observability/_index.md
+++ b/content/en/observability/_index.md
@@ -22,7 +22,7 @@ section2:
         - content: <span>Resource usage ranking</span> by node, workspace and project
         - content: <span>Service component monitoring</span> for users to quickly locate component failures
         - content: <span>Custom metrics support</span> includes application custom metrics dashboard (in v3.0.0)
-    
+
     - title: Log Query and Collection
       image: /images/observability/log-query-and-collection.png
       contentList:
@@ -30,7 +30,7 @@ section2:
         - content: <span>Multi-level log queries</span> include projects, workloads, Pods, containers and keywords, supporting drilling into each level to locate the issues
         - content: <span>Support multiple log collection platforms</span>, such as Elasticsearch, Kafka and Fluentd
         - content: <span>Service component monitoring</span> for users to quickly locate component failures
-    
+
     - title: Flexible Alerting and Notification
       image: /images/observability/flexible-alerting-and-notification.png
       contentList:
@@ -45,7 +45,7 @@ section3:
   image: /images/service-mesh/15.jpg
   content: Want to get started in action by following the hands-on lab?
   btnContent: Start Hands-on Lab
-  link:
+  link: https://kubesphere.io/docs/installation/intro/
   bgLeft: /images/service-mesh/3-2.svg
   bgRight: /images/service-mesh/3.svg
----
\ No newline at end of file
+---
diff --git a/content/en/service-mesh/_index.md b/content/en/service-mesh/_index.md
index 78aa0c5e6..629de537f 100644
--- a/content/en/service-mesh/_index.md
+++ b/content/en/service-mesh/_index.md
@@ -23,12 +23,12 @@ section2:
         - content: <span>Blue-green deployment</span> allows the new version of the application to be deployed in the green environment and tested for functionality and performance
         - content: <span>Traffic mirroring</span> enables teams to bring changes to production with as few risks as possible
         - content: <span>Circuit breakers</span> allow users to set limits for calls to individual hosts within a service
-    
+
     - title: Visualization
       image: /images/service-mesh/visualization.png
       summary: Observability is extremely useful in understanding cloud-native microservice interconnections. KubeSphere has the ability to visualize the connections between microservices and the topology of how they interconnect.
       contentList:
-    
+
     - title: Distributed Tracing
       image: /images/service-mesh/distributed-tracing.png
       summary: Based on Jaeger, KubeSphere enables users to track how each service interacts with other services. It brings a deeper understanding about request latency, bottlenecks, serialization and parallelism via visualization.
@@ -36,10 +36,10 @@ section2:
 
 section3:
   title: See KubeSphere Service Mesh In Action
-  image: /images/service-mesh/15.jpg
+  videoLink: https://www.youtube.com/embed/EkGWtwcsdE4
   content: Want to get started in action by following the hands-on lab?
   btnContent: Start Hands-on Lab
-  link:
+  link: https://kubesphere.io/docs/installation/install-servicemesh/
   bgLeft: /images/service-mesh/3-2.svg
   bgRight: /images/service-mesh/3.svg
----
\ No newline at end of file
+---