diff --git a/doc/issue.md b/doc/issue.md
new file mode 100644
index 000000000..f500be25a
--- /dev/null
+++ b/doc/issue.md
@@ -0,0 +1,4 @@
+# git
+
+if you modify doc/build.md, you cannot git add it, because it is in .gitignore file
+
diff --git a/doc/story.md b/doc/story.md
index 5c992b51f..1578fba64 100644
--- a/doc/story.md
+++ b/doc/story.md
@@ -36,4 +36,12 @@ llama
 
 ### 
 
-#### block
\ No newline at end of file
+#### block
+
+# Modify code
+
+## Find the llama block code process location
+
+## Write it precifily
+
+## 
\ No newline at end of file