diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
index d90ceed..a84db53 100644
--- a/.github/workflows/gradle.yml
+++ b/.github/workflows/gradle.yml
@@ -9,7 +9,7 @@ name: Kommand Test
 
 on:
   push:
-    branches: [ "main", "dev", "v2.0" ]
+    branches: [ "main", "dev" ]
   pull_request:
     branches: [ "main" ]
   workflow_dispatch:
diff --git a/README.md b/README.md
index a072a71..93ed000 100644
--- a/README.md
+++ b/README.md
@@ -4,39 +4,44 @@
 
 # Kommand
 
-Kotlin Native library for create subprocesses and handle their I/O.
+Kotlin Native library for create sub-process and redirect their I/O.
 
-# Supported Platforms
-
-- macOS-X64
-- macOS-Arm64
-- linux-X64
-- linux-Arm64
-- mingw-X64
-- JVM
+# v2.0.0
 
-# Architecture
+Rust is an excellent language that takes into account both performance and engineering.
 
-![architecture](assets/architecture_3.0.png)
+In version 1.x, we use the following API to provide the function of creating child processes
 
-# Dependent
+- `fork` of [POSIX api]
+- `CreateChildProcess` of [win32 api]
+- `java.lang.ProcessBuilder` of JVM
 
-- Heavily inspired by the rust-std `Command`.
-- Based on the `ktor-io`, Inter-Process Communication(IPC) can be handled using pipes
-- Kotlin Multiplatform 1.7.20 with new memory manager
+In version 2.0, we use the Rust standard library to provide the function of creating child processes.
 
-- ### Native for macOS/Linux
+- `std::process::Command` of Rust
+- `java.lang.ProcessBuilder` of JVM
 
-    System calls using POSIX api
+It will bring
 
-- ### Native for Mingw
+- More unified API
+- Easier to use API
+- Performance is still excellent
+- Easier to maintain
+- Code structure is clearer
 
-    System calls using Win32 api
+# Supported Platforms
 
-- ### JVM
+- x86_64-apple-darwin
+- aarch64-apple-darwin
+- x86_64-unknown-linux-gnu
+- aarch64-unknown-linux-gnu
+- x86_64-pc-windows-gnu (mingw-w64)
+- jvm
 
-    Based `java.lang.ProcessBuilder`
+# Dependent
 
+- Rust Standard Library 1.69.0
+- Kotlin Multiplatform 1.9.21
 
 # Usage
 
@@ -54,7 +59,8 @@ repositories {
 // ……
 
 dependencies {
-    implementation("com.kgit2:kommand:$lastVersion")
+    // should replace with the latest version
+    implementation("com.kgit2:kommand:2.x")
 }
 
 ```
@@ -63,37 +69,54 @@ dependencies {
 
 ### Inherit Standard I/O
 
+https://github.com/kgit2/kommand/kommand-examples/example1/src/commonMain/kotlin/com/kgit2/kommand/Main.kt#L1-L12
+
 ```kotlin
-Command("ping")
-    .arg("-c")
-    .args("5", "localhost")
-    .spawn()
-    .wait()
+import com.kgit2.kommand.process.Command
+import com.kgit2.kommand.process.Stdio
+
+fun main() {
+    Command("ping")
+        .args(listOf("-c", "5", "localhost"))
+        .stdout(Stdio.Inherit)
+        .spawn()
+        .wait()
+}
 ```
 
 ### Piped I/O
 
+https://github.com/kgit2/kommand/kommand-examples/example2/src/commonMain/kotlin/com/kgit2/kommand/Main.kt#L1-L15
+
 ```kotlin
-val child = Command("ping")
-    .args("-c", "5", "localhost")
-    .stdout(Stdio.Pipe)
-    .spawn()
-val stdoutReader: com.kgit2.io.Reader? = child.getChildStdout()
-val lines: Sequence<String> = stdoutReader?.lines()
-lines.forEach { 
-    println(it)
+import com.kgit2.kommand.process.Command
+import com.kgit2.kommand.process.Stdio
+
+fun main() {
+    val child = Command("ping")
+        .args(listOf("-c", "5", "localhost"))
+        .stdout(Stdio.Pipe)
+        .spawn()
+    child.bufferedStdout()?.lines()?.forEach { line ->
+        println(line)
+    }
+    child.wait()
 }
-child.wait()
 ```
 
 ### Null I/O
 
 ```kotlin
-Command("gradle")
-    .arg("build")
-    .stdout(Stdio.Null)
-    .spawn()
-    .wait()
+import com.kgit2.kommand.process.Command
+import com.kgit2.kommand.process.Stdio
+
+fun main() {
+    Command("echo")
+        .arg("nothing")
+        .stdout(Stdio.Null)
+        .spawn()
+        .wait()
+}
 ```
 
 ## Build
diff --git a/kommand-examples/example3/src/commonMain/kotlin/com/kgit2/kommand/Main.kt b/kommand-examples/example3/src/commonMain/kotlin/com/kgit2/kommand/Main.kt
index af98d4a..207e606 100644
--- a/kommand-examples/example3/src/commonMain/kotlin/com/kgit2/kommand/Main.kt
+++ b/kommand-examples/example3/src/commonMain/kotlin/com/kgit2/kommand/Main.kt
@@ -4,10 +4,9 @@ import com.kgit2.kommand.process.Command
 import com.kgit2.kommand.process.Stdio
 
 fun main() {
-    Command("ping")
-        .args(listOf("-c", "5", "localhost"))
-        .stdout(Stdio.Inherit)
+    Command("echo")
+        .arg("nothing")
+        .stdout(Stdio.Null)
         .spawn()
         .wait()
-    TODO("Need other more representative examples")
 }