diff --git a/labs/2_IntroKubernetes/hello-world-apply.yaml b/labs/2_IntroKubernetes/hello-world-apply.yaml
index 83b0f9b..26732f7 100644
--- a/labs/2_IntroKubernetes/hello-world-apply.yaml
+++ b/labs/2_IntroKubernetes/hello-world-apply.yaml
@@ -21,7 +21,7 @@ spec:
         run: hello-world
     spec:
       containers:
-      - image: us.icr.io/<my_namespace>/hello-world:1
+      - image: us.icr.io/s9tingli/hello-world:1
         imagePullPolicy: Always
         name: hello-world
         ports:
diff --git a/labs/2_IntroKubernetes/hello-world-create.yaml b/labs/2_IntroKubernetes/hello-world-create.yaml
index ccb8047..ca350c5 100644
--- a/labs/2_IntroKubernetes/hello-world-create.yaml
+++ b/labs/2_IntroKubernetes/hello-world-create.yaml
@@ -5,7 +5,7 @@ metadata:
 spec:
   containers:
   - name: hello-world
-    image: us.icr.io/<my_namespace>/hello-world:1
+    image: us.icr.io/s9tingli/hello-world:1
     ports:
     - containerPort: 8080
   imagePullSecrets:
diff --git a/labs/3_K8sScaleAndUpdate/app.js b/labs/3_K8sScaleAndUpdate/app.js
index 1d69822..94a069a 100644
--- a/labs/3_K8sScaleAndUpdate/app.js
+++ b/labs/3_K8sScaleAndUpdate/app.js
@@ -4,7 +4,7 @@ var hostname = os.hostname();
 var app = express()
 
 app.get('/', function(req, res) {
-  res.send('Hello world from ' + hostname + '! Your app is up and running!\n')
+  res.send('Welcome to ' + hostname + '! Your app is up and running!\n')
 })
 app.listen(8080, function() {
   console.log('Sample app is listening on port 8080.')
diff --git a/labs/3_K8sScaleAndUpdate/deployment.yaml b/labs/3_K8sScaleAndUpdate/deployment.yaml
index c26e80e..45dda87 100644
--- a/labs/3_K8sScaleAndUpdate/deployment.yaml
+++ b/labs/3_K8sScaleAndUpdate/deployment.yaml
@@ -13,7 +13,7 @@ spec:
     spec:
       containers:
       - name: hello-world
-        image: us.icr.io/<my_namespace>/hello-world:1
+        image: us.icr.io/sn-labs-s9tingli/hello-world:1
         ports:
         - containerPort: 8080
         resources: