---
type: "Topics"
locale: "en"
url: "https://longbridge.com/en/topics/38436089.md"
description: "The rules are designed for the bottom layer"
datetime: "2026-02-04T13:04:43.000Z"
locales:
  - [en](https://longbridge.com/en/topics/38436089.md)
  - [zh-CN](https://longbridge.com/zh-CN/topics/38436089.md)
  - [zh-HK](https://longbridge.com/zh-HK/topics/38436089.md)
author: "[蝸牛投资](https://longbridge.com/en/profiles/18190526.md)"
---

# The rules are designed for the bottom layer…