diff --git a/slices/go.go b/slices/go.go
index 78e0bd3..05ab9c8 100644
--- a/slices/go.go
+++ b/slices/go.go
@@ -18,8 +18,12 @@ func main() {
 	fmt.Println("p[:3] == ", p[:3])
 	fmt.Println("p[4:] == ", p[4:])
 
-	v := make([]string, 0)
+	v := make([]string, 30, 1024)
+	fmt.Printf("%v\n", v)
+	fmt.Printf("%v\n", cap(v))
 	v = append(v, "hello", "world")
 	fmt.Printf("%v\n", v)
 
+    界 := 12.34
+    fmt.Printf("%v\n", 界)
 }