diff --git a/slides/demo.md b/slides/demo.md
index 1ecca0c..60b909a 100644
--- a/slides/demo.md
+++ b/slides/demo.md
@@ -95,7 +95,7 @@ beancloud.software.desktop = true;
 ```mermaid
 %%{init: {'theme': 'dark', 'themeVariables': { 'darkMode': true }}}%%
 flowchart TD
-        A(Disk & OS Installation)
+        A(<b>Disk & OS Installation)
         B(<b>Nextcloud server)
         C(MariaDB)
         D(nginx)
@@ -156,19 +156,18 @@ beancloud.software.forgejo = true;
 flowchart LR
     subgraph pc-demo1
         direction LR
-        B(<b>Disk & OS Installation)
-        subgraph k8s
+        A(<b>Disk & OS Installation)
+        subgraph MicroVM
             direction LR
-            I("MicroVM(NixOS)")
-            J(Kubernetes)
-            subgraph containerd
+            B(NixOS)
+            C(Kubernetes)
+            subgraph Container
                 direction LR
-                L(Container)
-                K(<b>Splunk)
+                D(<b>Splunk)
             end
         end
     end
-    B--> I --> J --> L --> K
+    A--> B --> C --> D
 ```
 
 ```nix