diff --git a/.vscode/settings.json b/.vscode/settings.json
index d8da082..f837141 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,9 +1,47 @@
 {
-    "rust-analyzer.linkedProjects": [
-        "crates/shen-nbt1/Cargo.toml",
-        "crates/shen-nbt2/Cargo.toml",
-        "crates/shen-nbt3/Cargo.toml",
-        "crates/shen-nbt4/Cargo.toml",
-        "crates/nbt-test/Cargo.toml",
-    ]
+    "files.associations": {
+        "*.html": "html",
+        "__bit_reference": "cpp",
+        "__config": "cpp",
+        "__hash_table": "cpp",
+        "__locale": "cpp",
+        "__node_handle": "cpp",
+        "__split_buffer": "cpp",
+        "__threading_support": "cpp",
+        "__verbose_abort": "cpp",
+        "array": "cpp",
+        "cctype": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "cstdarg": "cpp",
+        "cstddef": "cpp",
+        "cstdint": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "cstring": "cpp",
+        "ctime": "cpp",
+        "cwchar": "cpp",
+        "cwctype": "cpp",
+        "execution": "cpp",
+        "initializer_list": "cpp",
+        "ios": "cpp",
+        "iosfwd": "cpp",
+        "limits": "cpp",
+        "locale": "cpp",
+        "mutex": "cpp",
+        "new": "cpp",
+        "optional": "cpp",
+        "ratio": "cpp",
+        "span": "cpp",
+        "stdexcept": "cpp",
+        "streambuf": "cpp",
+        "string": "cpp",
+        "string_view": "cpp",
+        "tuple": "cpp",
+        "typeinfo": "cpp",
+        "unordered_map": "cpp",
+        "variant": "cpp",
+        "vector": "cpp",
+        "algorithm": "cpp"
+    }
 }
\ No newline at end of file
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..3ed5081
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,10 @@
+[workspace]
+members = [
+    "nbt-test",
+    # "shen-nbt1",  # EOL!
+    "shen-nbt2",
+    "shen-nbt3",
+    "shen-nbt4", 
+    "shen-nbt5",
+]
+resolver = "2"
\ No newline at end of file
diff --git a/crates/nbt-test/Cargo.toml b/nbt-test/Cargo.toml
similarity index 100%
rename from crates/nbt-test/Cargo.toml
rename to nbt-test/Cargo.toml
diff --git a/crates/nbt-test/src/main.rs b/nbt-test/src/main.rs
similarity index 86%
rename from crates/nbt-test/src/main.rs
rename to nbt-test/src/main.rs
index 3f1c471..fb11510 100644
--- a/crates/nbt-test/src/main.rs
+++ b/nbt-test/src/main.rs
@@ -192,7 +192,6 @@ fn test_fastnbt(data: Vec<u8>) {
 }
 
 fn read_test(in_data: Vec<u8>) {
-    let len = in_data.len();
     #[cfg(feature = "debug")]
     println!("data: {:?}", data);
 
@@ -219,44 +218,65 @@ fn cli_read_test() {
     let mut args = std::env::args();
     // 如果有, 取出
     if let Some(arg) = args.nth(1) {
-        let data = std::fs::read(&arg).unwrap();
+        let read_data = std::fs::read(&arg).unwrap();
         // read_test(data);
-        let len = data.len();
-        test_lib!(
-            {
-                let cursor: shen_nbt1::data::Reader = std::io::Cursor::new(data.as_slice());
-                let nbt_data = shen_nbt1::data::NbtItem::try_from(cursor).unwrap();
+        let len = read_data.len();
+        let data = read_data;
+
+        std::thread::sleep(std::time::Duration::from_secs(1));
+        let start_time = std::time::Instant::now();
+        let nbt_data = shen_nbt4::Value::from_vec(data);
+        let end_time = std::time::Instant::now();
+        println!("=== shen nbt 4 ===");
+        print!("time: {:?}", end_time - start_time);
+        println!("  speed: {:?} (bytes/sec)", len as f64 / (end_time - start_time).as_secs_f64());
+        println!("{:?} (kb/sec)", len as f64 / (end_time - start_time).as_secs_f64() / 1024.0);
+        println!(
+            "{:?} (mb/sec)",
+            len as f64 / (end_time - start_time).as_secs_f64() / 1024.0 / 1024.0
+        );
+        println!(
+            "{:?} (gb/sec)",
+            len as f64 / (end_time - start_time).as_secs_f64() / 1024.0 / 1024.0 / 1024.0
+        );
+        #[cfg(feature = "core_debug")]
+        println!("nbt_data: {:#?}", nbt_data);
+        println!("nbt len {}", nbt_data.as_byte().is_some());
+        // test_lib!(
+        //     {
+        //         let cursor: shen_nbt1::data::Reader = std::io::Cursor::new(data.as_slice());
+        //         let nbt_data = shen_nbt1::data::NbtItem::try_from(cursor).unwrap();
                 
-            }, "nbt v1", len
-        );
+        //     }, "nbt v1", len
+        // );
     
-        let data2 = std::fs::read(&arg).unwrap();
-        test_lib!(
-            {
-                let nbt_data = shen_nbt2::Value::from_vec(data2);
-            }, "nbt v2", len
-        );
+        // let data2 = std::fs::read(&arg).unwrap();
+        // test_lib!(
+        //     {
+        //         let nbt_data = shen_nbt2::Value::from_vec(data2);
+        //     }, "nbt v2", len
+        // );
     
-        let data3 = std::fs::read(&arg).unwrap();
-        test_lib!(
-            {
-                let nbt_data = shen_nbt3::Value::from_vec(data3);
-            }, "nbt v3", len
-        );
+        // let data3 = std::fs::read(&arg).unwrap();
+        // test_lib!(
+        //     {
+        //         let nbt_data = shen_nbt3::Value::from_vec(data3);
+        //     }, "nbt v3", len
+        // );
     
-        let data4 = std::fs::read(&arg).unwrap();
-        test_lib!(
-            {
-                let nbt_data = shen_nbt4::Value::from_vec(data4);
-            }, "nbt v4", len
-        );
+        // let data4 = std::fs::read(&arg).unwrap();
+        // test_lib!(
+        //     {
+        //         let nbt_data = shen_nbt4::Value::from_vec(data);
+        //     }, "nbt v4", len
+        // );
     
-        let data5 = std::fs::read(&arg).unwrap();
-        test_lib!(
-            {
-                let nbt_data: fastnbt::Value = fastnbt::from_bytes(data5.as_slice()).unwrap();
-            }, "fastnbt", len
-        );
+        // let data5 = std::fs::read(&arg).unwrap();
+        // test_lib!(
+        //     {
+        //         let nbt_data: fastnbt::Value = fastnbt::from_bytes(data5.as_slice()).unwrap();
+        //     }, "fastnbt", len
+        // );
     } else {
         println!("Usage: cargo run --release -- <file>");
     }
diff --git a/crates/shen-nbt1/Cargo.toml b/shen-nbt1/Cargo.toml
similarity index 100%
rename from crates/shen-nbt1/Cargo.toml
rename to shen-nbt1/Cargo.toml
diff --git a/crates/shen-nbt1/LICENSE b/shen-nbt1/LICENSE
similarity index 100%
rename from crates/shen-nbt1/LICENSE
rename to shen-nbt1/LICENSE
diff --git a/crates/shen-nbt1/src/data.rs b/shen-nbt1/src/data.rs
similarity index 100%
rename from crates/shen-nbt1/src/data.rs
rename to shen-nbt1/src/data.rs
diff --git a/crates/shen-nbt1/src/lib.rs b/shen-nbt1/src/lib.rs
similarity index 100%
rename from crates/shen-nbt1/src/lib.rs
rename to shen-nbt1/src/lib.rs
diff --git a/crates/shen-nbt1/src/read.rs b/shen-nbt1/src/read.rs
similarity index 99%
rename from crates/shen-nbt1/src/read.rs
rename to shen-nbt1/src/read.rs
index 67c97e3..bdeb029 100644
--- a/crates/shen-nbt1/src/read.rs
+++ b/shen-nbt1/src/read.rs
@@ -1,5 +1,4 @@
 use crate::data::{NbtItem, NbtList, NbtValue, Reader};
-use std::convert::From;
 use std::io::{BufRead, Cursor, Read};
 
 /// 输出类型标识符
diff --git a/crates/shen-nbt1/src/rustfmt.toml b/shen-nbt1/src/rustfmt.toml
similarity index 100%
rename from crates/shen-nbt1/src/rustfmt.toml
rename to shen-nbt1/src/rustfmt.toml
diff --git a/crates/shen-nbt2/Cargo.toml b/shen-nbt2/Cargo.toml
similarity index 100%
rename from crates/shen-nbt2/Cargo.toml
rename to shen-nbt2/Cargo.toml
diff --git a/crates/shen-nbt2/src/lib.rs b/shen-nbt2/src/lib.rs
similarity index 100%
rename from crates/shen-nbt2/src/lib.rs
rename to shen-nbt2/src/lib.rs
diff --git a/crates/shen-nbt2/src/rustfmt.toml b/shen-nbt2/src/rustfmt.toml
similarity index 100%
rename from crates/shen-nbt2/src/rustfmt.toml
rename to shen-nbt2/src/rustfmt.toml
diff --git a/crates/shen-nbt3/Cargo.toml b/shen-nbt3/Cargo.toml
similarity index 100%
rename from crates/shen-nbt3/Cargo.toml
rename to shen-nbt3/Cargo.toml
diff --git a/crates/shen-nbt3/src/lib.rs b/shen-nbt3/src/lib.rs
similarity index 100%
rename from crates/shen-nbt3/src/lib.rs
rename to shen-nbt3/src/lib.rs
diff --git a/crates/shen-nbt3/src/rustfmt.toml b/shen-nbt3/src/rustfmt.toml
similarity index 100%
rename from crates/shen-nbt3/src/rustfmt.toml
rename to shen-nbt3/src/rustfmt.toml
diff --git a/crates/shen-nbt4/Cargo.toml b/shen-nbt4/Cargo.toml
similarity index 100%
rename from crates/shen-nbt4/Cargo.toml
rename to shen-nbt4/Cargo.toml
diff --git a/crates/shen-nbt4/src/lib.rs b/shen-nbt4/src/lib.rs
similarity index 100%
rename from crates/shen-nbt4/src/lib.rs
rename to shen-nbt4/src/lib.rs
diff --git a/crates/shen-nbt4/src/rustfmt.toml b/shen-nbt4/src/rustfmt.toml
similarity index 100%
rename from crates/shen-nbt4/src/rustfmt.toml
rename to shen-nbt4/src/rustfmt.toml
diff --git a/shen-nbt5/Cargo.toml b/shen-nbt5/Cargo.toml
new file mode 100644
index 0000000..eca3c35
--- /dev/null
+++ b/shen-nbt5/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "shen-nbt5"
+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/shen-nbt5/src/main.rs b/shen-nbt5/src/main.rs
new file mode 100644
index 0000000..e7a11a9
--- /dev/null
+++ b/shen-nbt5/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}