diff --git a/crates/nbt-test/src/main.rs b/crates/nbt-test/src/main.rs
index 956a3ee..3f1c471 100644
--- a/crates/nbt-test/src/main.rs
+++ b/crates/nbt-test/src/main.rs
@@ -1,22 +1,12 @@
 fn main() {
     println!("Hello, nbt!");
     // sleep 1s
-    println!("====== small test ======");
-    small_read_test();
-    println!("====== big test ======");
+    println!("============ small test ============");
     big_read_test();
-    println!("====== cli test ======");
+    println!("============ cli test ============");
     cli_read_test();
 }
 
-fn small_read_test() {
-    let data: [u8; 0x21] = [
-        0x0A, 0x00, 0x0B, 0x68, 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0x77, 0x6F, 0x72, 0x6C, 0x64, 0x08,
-        0x00, 0x04, 0x6E, 0x61, 0x6D, 0x65, 0x00, 0x09, 0x42, 0x61, 0x6E, 0x61, 0x6E, 0x72, 0x61,
-        0x6D, 0x61, 0x00,
-    ];
-    read_test(data.to_vec());
-}
 
 fn big_read_test() {
     let data: [u8; 0x608] = [
@@ -151,15 +141,8 @@ macro_rules! test_lib {
     };
 }
 
-fn read_test(in_data: Vec<u8>) {
-    let len = in_data.len();
-    #[cfg(feature = "debug")]
-    println!("data: {:?}", data);
-
-    let data = in_data.clone();
-    // let data2 = in_data.clone();
-    // let data3 = in_data.clone();
-    // let data4 = in_data.clone();
+fn test_v1(data: Vec<u8>) {
+    let len = data.len();
     std::thread::sleep(std::time::Duration::from_secs(1));
     test_lib!(
         {
@@ -167,25 +150,40 @@ fn read_test(in_data: Vec<u8>) {
             let _nbt_data = shen_nbt1::data::NbtItem::try_from(cursor).unwrap();
         }, "nbt v1", len
     );
-
+}
+fn test_v2(data: Vec<u8>) {
+    let len = data.len();
+    std::thread::sleep(std::time::Duration::from_secs(1));
     test_lib!(
         {
-            let _nbt_data = shen_nbt2::Value::from_vec(data.as_slice().to_vec());
+            let _nbt_data = shen_nbt2::Value::from_vec(data);
         }, "nbt v2", len
     );
+}
 
+fn test_v3(data: Vec<u8>) {
+    let len = data.len();
+    std::thread::sleep(std::time::Duration::from_secs(1));
     test_lib!(
         {
-            let _nbt_data = shen_nbt3::Value::from_vec(data.as_slice().to_vec());
+            let _nbt_data = shen_nbt3::Value::from_vec(data);
         }, "nbt v3", len
     );
+}
 
+fn test_v4(data: Vec<u8>) {
+    let len = data.len();
+    std::thread::sleep(std::time::Duration::from_secs(1));
     test_lib!(
         {
-            let _nbt_data = shen_nbt4::Value::from_vec(data.as_slice().to_vec());
+            let _nbt_data = shen_nbt4::Value::from_vec(data);
         }, "nbt v4", len
     );
+}
 
+fn test_fastnbt(data: Vec<u8>) {
+    let len = data.len();
+    std::thread::sleep(std::time::Duration::from_secs(1));
     test_lib!(
         {
             let _nbt_data: fastnbt::Value = fastnbt::from_bytes(data.as_slice()).unwrap();
@@ -193,6 +191,29 @@ fn read_test(in_data: Vec<u8>) {
     );
 }
 
+fn read_test(in_data: Vec<u8>) {
+    let len = in_data.len();
+    #[cfg(feature = "debug")]
+    println!("data: {:?}", data);
+
+    std::thread::sleep(std::time::Duration::from_secs(1));
+
+    let data = in_data.clone();
+    test_v1(data);
+
+    let data = in_data.clone();
+    test_v2(data);
+
+    let data = in_data.clone();
+    test_v3(data);
+
+    let data = in_data.clone();
+    test_v4(data);
+
+    let data = in_data.clone();
+    test_fastnbt(data);
+}
+
 
 fn cli_read_test() {
     let mut args = std::env::args();
@@ -204,35 +225,36 @@ fn cli_read_test() {
         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 nbt_data = shen_nbt1::data::NbtItem::try_from(cursor).unwrap();
+                
             }, "nbt v1", len
         );
     
-        let data = std::fs::read(&arg).unwrap();
+        let data2 = std::fs::read(&arg).unwrap();
         test_lib!(
             {
-                let _nbt_data = shen_nbt2::Value::from_vec(data);
+                let nbt_data = shen_nbt2::Value::from_vec(data2);
             }, "nbt v2", len
         );
     
-        let data = std::fs::read(&arg).unwrap();
+        let data3 = std::fs::read(&arg).unwrap();
         test_lib!(
             {
-                let _nbt_data = shen_nbt3::Value::from_vec(data);
+                let nbt_data = shen_nbt3::Value::from_vec(data3);
             }, "nbt v3", len
         );
     
-        let data = std::fs::read(&arg).unwrap();
+        let data4 = std::fs::read(&arg).unwrap();
         test_lib!(
             {
-                let _nbt_data = shen_nbt4::Value::from_vec(data);
+                let nbt_data = shen_nbt4::Value::from_vec(data4);
             }, "nbt v4", len
         );
     
-        let data = std::fs::read(&arg).unwrap();
+        let data5 = std::fs::read(&arg).unwrap();
         test_lib!(
             {
-                let _nbt_data: fastnbt::Value = fastnbt::from_bytes(data.as_slice()).unwrap();
+                let nbt_data: fastnbt::Value = fastnbt::from_bytes(data5.as_slice()).unwrap();
             }, "fastnbt", len
         );
     } else {