diff --git a/Cargo.lock b/Cargo.lock
deleted file mode 100644
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+++ /dev/null
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-# It is not intended for manual editing.
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diff --git a/Cargo.toml b/v1/Cargo.toml
similarity index 100%
rename from Cargo.toml
rename to v1/Cargo.toml
diff --git a/LICENSE b/v1/LICENSE
similarity index 100%
rename from LICENSE
rename to v1/LICENSE
diff --git a/src/data.rs b/v1/src/data.rs
similarity index 100%
rename from src/data.rs
rename to v1/src/data.rs
diff --git a/src/main.rs b/v1/src/main.rs
similarity index 100%
rename from src/main.rs
rename to v1/src/main.rs
diff --git a/src/read.rs b/v1/src/read.rs
similarity index 100%
rename from src/read.rs
rename to v1/src/read.rs
diff --git a/src/rustfmt.toml b/v1/src/rustfmt.toml
similarity index 100%
rename from src/rustfmt.toml
rename to v1/src/rustfmt.toml
diff --git a/v2/Cargo.toml b/v2/Cargo.toml
new file mode 100644
index 0000000..4ad2937
--- /dev/null
+++ b/v2/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "shen-nbt2"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/v2/src/data_struct.rs b/v2/src/data_struct.rs
new file mode 100644
index 0000000..d38da68
--- /dev/null
+++ b/v2/src/data_struct.rs
@@ -0,0 +1,29 @@
+use std::collections::HashMap;
+
+/// NBT 里除了字符串的长度量都是 i32
+pub type NbtLength = i32;
+
+/// NBT 里的字符串独树一帜的把自己的长度用一个u32表示
+/// 不如说为啥别的不用 u32 呢
+pub type StringLength = u16;
+
+
+pub struct RawData<'data> {
+    pub raw_data: &'data [u8],
+}
+
+
+pub enum Value<'value> {
+    Byte(RawData<'value>),
+    Short(RawData<'value>),
+    Int(RawData<'value>),
+    Long(RawData<'value>),
+    Float(RawData<'value>),
+    Double(RawData<'value>),
+    String(RawData<'value>),
+    ByteArray(RawData<'value>),
+    IntArray(RawData<'value>),
+    LongArray(RawData<'value>),
+    List(Vec<Value<'value>>),
+    Compound(HashMap<&'value str, Value<'value>>),
+}
diff --git a/v2/src/main.rs b/v2/src/main.rs
new file mode 100644
index 0000000..9df3cb0
--- /dev/null
+++ b/v2/src/main.rs
@@ -0,0 +1,5 @@
+mod data_struct;
+
+fn main() {
+    println!("Hello, world!");
+}