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website/docs/guide/what-is-kernelsu.md

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+# What is KernelSU?
+
+KernelSU is a root solution for Android GKI devices, it works in kernel mode and grant root permission to userspace application directly in kernel space.
+
+## Features
+
+The main feature of KernelSU is it is **Kernel-based**. KernelSU works in kernel mode, so it can provide kernel interface we never had before. For example, we can add hardware breakpoint to any process in kernel mode; We can access physical memory of any process without anybody being aware of; We can intercept any syscall in kernel space; etc.
+
+And also, KernelSU provides a module system via overlayfs, which allows you to load your custom plugin into system. It also provides a mechanism to modify files in `/system` partition.
+
+## How to use
+
+Please refer: [Installation](installation)
+
+## How to build
+
+[How to build](how-to-build)
+
+## Discussion
+
+- Telegram: [@KernelSU](https://t.me/KernelSU)