diff --git a/guide-en/getting-started/preparing.md b/guide-en/getting-started/preparing.md
index 558e82f4c..497870689 100644
--- a/guide-en/getting-started/preparing.md
+++ b/guide-en/getting-started/preparing.md
@@ -1,3 +1,4 @@
 Tell the users how to prepare to code.
+like installing node & npm & etc.
 
 (this is for the user who never coded before)
\ No newline at end of file
diff --git a/guide-en/other/sern-vs-sapphire.md b/guide-en/other/sern-vs-sapphire.md
new file mode 100644
index 000000000..694b05a7a
--- /dev/null
+++ b/guide-en/other/sern-vs-sapphire.md
@@ -0,0 +1 @@
+😈 Kill sapphire
\ No newline at end of file