Update schedule_zh-CN.md (#39)

Co-authored-by: zzy <zhang.zhengyang@immomo.com>
Co-authored-by: Jennifer Huang <47805623+Jennifer88huang@users.noreply.github.com>
diff --git a/schedule_zh-CN.md b/schedule_zh-CN.md
index 41ee66b..b1f6175 100644
--- a/schedule_zh-CN.md
+++ b/schedule_zh-CN.md
@@ -173,6 +173,7 @@
 sql-getting-started | SylviaBABY | | Translated
 sql-overview | SylviaBABY | | Translated
 sql-rest-api | SylviaBABY | | Translated
+tiered-storage-overview | zzy | | To Do
 tiered-storage-aws | | | To Do
 tiered-storage-azure | | | To Do
 tiered-storage-filesystem | | | To Do