diff --git a/Libs/VPUI64/linker.ld b/Libs/VPUI64/linker.ld
deleted file mode 100644
index bd3258d..0000000
--- a/Libs/VPUI64/linker.ld
+++ /dev/null
@@ -1,34 +0,0 @@
-SECTIONS {
-    . = 0;
-
-    .text : {
-        *(.text)
-        *(.text.*)
-    }
-
-    .rodata : {
-        *(.rodata)
-        *(.rodata.*)
-    }
-
-    .data : {
-        *(.data)
-        *(.data.*)
-    }
-
-    .bss : {
-        PROVIDE(__bss_start = .);
-        *(.bss)
-        *(.bss.*)
-        PROVIDE(__bss_end = .);
-    }
-
-    /DISCARD/ : {
-        *(.comment)
-        *(.note)
-        *(.eh_frame)
-        *(.eh_frame_hdr)
-        *(.reloc)
-        *(.debug*)
-    }
-}
diff --git a/Libs/VPUI64/project.vpj b/Libs/VPUI64/project.vpj
deleted file mode 100644
index 0065c35..0000000
--- a/Libs/VPUI64/project.vpj
+++ /dev/null
@@ -1,33 +0,0 @@
-{
-    "name": "VPUI64",
-    "version": "1.0.0",
-    "source_dir": "./",
-    "build_dir": "./__vpcbuild__",
-    "compiler": {
-        "cmd": "llc",
-        "flags": ["-filetype=obj", "-mtriple=x86_64-none-elf", "-relocation-model=pic", "-O2"]
-    },
-    "linker": {
-        "cmd": "ld.lld.exe",
-        "flags": [
-            "-m", "elf_x86_64",
-            "-T", "linker.ld",
-            "--oformat", "elf64-x86-64",
-            "-shared",
-            "-z", "notext",
-            "--no-relax",
-            "--strip-all"
-        ],
-        "output": "vpui64.so"
-    },
-    "includes": ["../..", "../../../../includes"],
-    "target": {
-        "triple": "x86_64-none-elf",
-        "datalayout": "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-    },
-    "options": {
-        "slice_level": 3,
-        "target": "llvm",
-        "strict_mode": true
-    }
-}
diff --git a/Libs/VPUI64/vpui64.vp b/Libs/VPUI64/vpui64.vp
deleted file mode 100644
index bc79045..0000000
--- a/Libs/VPUI64/vpui64.vp
+++ /dev/null
@@ -1,80 +0,0 @@
-import t
-import vpsdk.syscall as syscall
-
-UINT32PTR: t.CTypedef = uint32*
-
-def color_rgb(r: uint8, g: uint8, b: uint8) -> uint32:
-    return uint32(r) | (uint32(g) << 8) | (uint32(b) << 16)
-
-def get_winbuf(win_id: int) -> UINT32PTR:
-    return syscall._syscall2(uint64(syscall.Syscall.GET_WINBUF), uint64(win_id), 0)
-
-def win_flush(win_id: int):
-    syscall._syscall2(uint64(syscall.Syscall.WIN_FLUSH), uint64(win_id), 0)
-
-export def draw_pixel(buf: UINT32PTR, bw: int, x: int, y: int, color: uint32):
-    if x < 0 or y < 0: return
-    buf[y * bw + x] = color
-
-export def draw_line(buf: UINT32PTR, bw: int, x0: int, y0: int, x1: int, y1: int, color: uint32):
-    dx: int = x1 - x0
-    dy: int = y1 - y0
-    sx: int = 1
-    sy: int = 1
-    if dx < 0:
-        dx = -dx
-        sx = -1
-    if dy < 0:
-        dy = -dy
-        sy = -1
-    err: int = dx - dy
-    while True:
-        if x0 >= 0 and y0 >= 0:
-            buf[y0 * bw + x0] = color
-        if x0 == x1 and y0 == y1:
-            break
-        e2: int = 2 * err
-        if e2 > -dy:
-            err -= dy
-            x0 += sx
-        if e2 < dx:
-            err += dx
-            y0 += sy
-
-export def draw_rect(buf: UINT32PTR, bw: int, rx: int, ry: int, rw: int, rh: int, color: uint32):
-    draw_line(buf, bw, rx, ry, rx + rw - 1, ry, color)
-    draw_line(buf, bw, rx + rw - 1, ry, rx + rw - 1, ry + rh - 1, color)
-    draw_line(buf, bw, rx + rw - 1, ry + rh - 1, rx, ry + rh - 1, color)
-    draw_line(buf, bw, rx, ry + rh - 1, rx, ry, color)
-
-export def fill_rect(buf: UINT32PTR, bw: int, rx: int, ry: int, rw: int, rh: int, color: uint32):
-    if rx < 0: rw += rx; rx = 0
-    if ry < 0: rh += ry; ry = 0
-    if rw <= 0 or rh <= 0: return
-    py: int = ry
-    while py < ry + rh:
-        px: int = rx
-        while px < rx + rw:
-            buf[py * bw + px] = color
-            px += 1
-        py += 1
-
-export def draw_circle(buf: UINT32PTR, bw: int, cx: int, cy: int, r: int, color: uint32):
-    x: int = r
-    y: int = 0
-    d: int = 1 - r
-    while x >= y:
-        if cx + x >= 0: buf[(cy + y) * bw + cx + x] = color
-        if cx + y >= 0: buf[(cy + x) * bw + cx + y] = color
-        if cx - y >= 0: buf[(cy + x) * bw + cx - y] = color
-        if cx - x >= 0: buf[(cy + y) * bw + cx - x] = color
-        if cx - x >= 0: buf[(cy - y) * bw + cx - x] = color
-        if cx - y >= 0: buf[(cy - x) * bw + cx - y] = color
-        if cx + y >= 0: buf[(cy - x) * bw + cx + y] = color
-        if cx + x >= 0: buf[(cy - y) * bw + cx + x] = color
-        y += 1
-        if d <= 0:
-            d += 2 * y + 1
-        else:
-            x -= 1
-            d += 2 * (y - x) + 1
diff --git a/README.md b/README.md
index 081cf49..ab15cd5 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ A bare-metal 64-bit operating system written in the [Viper](https://git.gvsds.co
 - **UEFI 引导器** —— `boot/boot.c`（GNU-EFI 编译为 `disk/EFI/BOOT/bootx64.efi`）
 - **FAT32 驱动** —— 自研实现，支持挂载、目录、文件操作
 - **4 个用户应用** —— HelloWorld / Terminal / Gargantua / Scene3D
-- **2 个动态库** —— SerialLogger / VPUI64
+- **1 个动态库** —— SerialLogger
 - **ViperPOS SDK** —— 用户态开发库（系统调用、窗口、文件系统、进程）
 
 ### 目录结构
@@ -62,8 +62,7 @@ ViperOS/
 │   ├── Gargantua/
 │   └── Scene3D/
 ├── Libs/                   # 动态库（每个子目录一个 .so）
-│   ├── SerialLogger/
-│   └── VPUI64/
+│   └── SerialLogger/
 ├── vpsdk/                  # ViperPOS SDK（应用开发用）
 │   ├── __init__.py
 │   ├── stdlib.py
@@ -121,7 +120,7 @@ python build.py
 
 `build.py` 会自动完成：
 1. 调用 `Projectrans.py` 编译 VKernel → `VKernel/output/kernel.bin`
-2. 编译 2 个动态库（SerialLogger、VPUI64）
+2. 编译 1 个动态库（SerialLogger）
 3. 编译 4 个应用（HelloWorld、Terminal、Gargantua、Scene3D）
 4. 拷贝所有产物到 `disk/apps/`、`disk/libs/`、`disk/sys/kernel/x86_64/`
 5. 调用 `Scripts/disk.ps1` 创建 64MB FAT32 镜像 `disk.img`
@@ -187,7 +186,7 @@ Main components:
 - **UEFI bootloader** — `boot/boot.c` (compiled by GNU-EFI to `disk/EFI/BOOT/bootx64.efi`)
 - **FAT32 driver** — self-implemented, supports mount/dir/file operations
 - **4 user applications** — HelloWorld / Terminal / Gargantua / Scene3D
-- **2 dynamic libraries** — SerialLogger / VPUI64
+- **1 dynamic library** — SerialLogger
 - **ViperPOS SDK** — user-space development kit (syscall, window, fs, process)
 
 ### Directory layout
@@ -228,8 +227,7 @@ ViperOS/
 │   ├── Gargantua/
 │   └── Scene3D/
 ├── Libs/                   # shared libraries (each subdir = one .so)
-│   ├── SerialLogger/
-│   └── VPUI64/
+│   └── SerialLogger/
 ├── vpsdk/                  # ViperPOS SDK (for user apps)
 │   ├── __init__.py
 │   ├── stdlib.py
@@ -287,7 +285,7 @@ python build.py
 
 `build.py` automatically:
 1. Calls `Projectrans.py` to build VKernel -> `VKernel/output/kernel.bin`
-2. Builds 2 shared libraries (SerialLogger, VPUI64)
+2. Builds 1 shared library (SerialLogger)
 3. Builds 4 applications (HelloWorld, Terminal, Gargantua, Scene3D)
 4. Copies all artifacts into `disk/apps/`, `disk/libs/`, `disk/sys/kernel/x86_64/`
 5. Calls `Scripts/disk.ps1` to create a 64MB FAT32 image `disk.img`
diff --git a/build.py b/build.py
index 5ae65a5..506e0c5 100644
--- a/build.py
+++ b/build.py
@@ -18,6 +18,8 @@ only_app = '--onlyapp' in sys.argv
 build_kernel = '--kernel' in sys.argv or kernel_only
 # --libs：编译 Libs/ 下的动态库（不带 --app 时默认也会编）
 libs = '--libs' in sys.argv
+# --nokernel：强制跳过内核编译（显式 --kernel 优先，仍可强制编内核）
+nokernel = '--nokernel' in sys.argv
 # --app=a,b,c：只编译列出的应用（逗号分隔、可多个）。不传则编译全部应用。
 app_filter = None
 for _arg in sys.argv:
@@ -27,11 +29,19 @@ for _arg in sys.argv:
 # 默认（不带 --app）重编内核；--app=… 视为只迭代应用。
 if app_filter is None:
     build_kernel = True
+# --nokernel 强制跳过内核编译，但显式 --kernel 仍优先（允许用 --kernel 覆盖 --nokernel）。
+if nokernel and '--kernel' not in sys.argv:
+    build_kernel = False
+
+# --kernel-only 与 --nokernel 互斥检查
+if kernel_only and nokernel:
+    print("[build] 错误: --kernel-only 与 --nokernel 互斥")
+    sys.exit(1)
 
 
 def BuildKernel():
     """编译内核：链接器一次产出带符号 kernel.elf，再由 objcopy 二次处理成裸镜像 kernel.bin"""
-    cmd = r'..\..\ViperC\output\viperc.exe --project ./VKernel/project.vpj --clear-cache --rebuild-includes'
+    cmd = r'..\..\ViperC\__vpcbuild__\output\viperc.exe --project ./VKernel/project.vpj --clear-cache --rebuild-includes'
     if clean:
         cmd += ' --clean'
     os.system(cmd)
@@ -61,7 +71,6 @@ APP_LIST = [
 # 动态库表：(工程目录, 产物文件名)
 LIB_LIST = [
     ("Libs/SerialLogger", "slog.so"),
-    ("Libs/VPUI64",       "vpui64.so"),
 ]
 
 
@@ -69,7 +78,7 @@ def BuildLibs():
     """编译 Libs/ 下的动态库（应用运行期经 LOAD_SO 加载）。"""
     os.makedirs("./disk/libs", exist_ok=True)
     for proj, out in LIB_LIST:
-        cmd = rf'..\..\ViperC\output\viperc.exe --project {proj}/project.vpj --clear-cache'
+        cmd = rf'..\..\ViperC\__vpcbuild__\output\viperc.exe --project {proj}/project.vpj --clear-cache'
         if clean:
             cmd += ' --clean'
         os.system(cmd)
@@ -114,7 +123,7 @@ def BuildApps():
     for name, proj, out, dst in APP_LIST:
         if app_filter is not None and name not in app_filter:
             continue
-        cmd = rf'..\..\ViperC\output\viperc.exe --project {proj}/project.vpj --clear-cache'
+        cmd = rf'..\..\ViperC\__vpcbuild__\output\viperc.exe --project {proj}/project.vpj --clear-cache'
         if clean:
             cmd += ' --clean'
         os.system(cmd)
@@ -215,9 +224,9 @@ else:
         if build_kernel:
             BuildKernel()
         else:
-            print("[build] 默认不重编内核（需要时加 --kernel）")
+            print("[build] 跳过内核编译（--app 或 --nokernel）")
         BuildApps()
     BuildBootloader()
     BuildDisk()
 
-RunQemu()
+RunQemu()
\ No newline at end of file