diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 435bb977..639a8044 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -1,72 +1,7 @@
-FROM ipads/chcore_builder:v1.9.0
+FROM ipads/oslab:24.09
 
 ARG USERNAME=stu
 ARG USER_UID=1000
 ARG USER_GID=$USER_UID
 
-RUN sed -i "s/archive.ubuntu.com/mirrors.tuna.tsinghua.edu.cn/g" /etc/apt/sources.list
-RUN apt-get update && apt-get upgrade -y
-RUN apt-get install -y sudo \
-					binutils-dev \
-					libgmp-dev \
-					libmpfr-dev \
-					curl \
-					meson \
-					python3 \
-					python3-pip \
-					python3-psutil \
-					bear \
-					cmake \
-					git \
-					pkgconf \
-					clangd
-
-# We need to install a latest gdb to support cppdbg.
-RUN curl -SLO https://ftp.gnu.org/gnu/gdb/gdb-13.2.tar.xz && \
-	tar -xf gdb-13.2.tar.xz && \
-	cd gdb-13.2 && \
-	./configure --prefix=/usr/local \
-				--enable-targets=aarch64-linux-gnu,x86_64-linux-gnu \
-				--enable-tui \
-				--disable-sim \
-				&& \
-	make -j$(nproc) && \
-	make install && \
-	cd .. && \
-	rm -rf gdb-13.2 gdb-13.2.tar.xz
-
-# install tomli for .toml file required by qemu 9.1.x
-RUN pip install tomli
-
-# we need to install >=glib-2.66.8 to support qemu 9.1.x
-RUN curl -SLO https://download.gnome.org/sources/glib/2.66/glib-2.66.8.tar.xz && \
-	tar -xvf glib-2.66.8.tar.xz && \
-	cd  glib-2.66.8 && \
-	meson build --prefix /usr/local && \
-	ninja -C build && \
-	ninja -C build install && \
-	cd .. && \
-	rm -rf glib-2.66.8 glib-2.66.8.tar.xz
-
-# install latest supported qemu supported by ubuntu-20.04.
-RUN curl -SLO https://download.qemu.org/qemu-9.1.0.tar.xz && \
-	tar -xf qemu-9.1.0.tar.xz && \
-	cd qemu-9.1.0 && \
-	./configure --prefix=/usr/local \
-				--target-list=aarch64-softmmu,aarch64-linux-user && \
-	make -j$(nproc) && \
-	make install && \
-	cd .. && \
-	rm -rf qemu-9.1.0 qemu-9.1.0.tar.xz
-
-RUN apt-get install -y libglib2.0-dev
-RUN apt-get clean
-
-# install repo
-RUN curl -SL https://storage.googleapis.com/git-repo-downloads/repo -o /usr/local/bin/repo && \
-	chmod +x /usr/local/bin/repo
-RUN useradd -m -u $USER_UID -U -s /bin/bash stu
-RUN usermod -aG sudo stu
-RUN passwd -d stu
-USER $USERNAME
 CMD ["/bin/bash"]
diff --git a/Lab4/kernel/arch/aarch64/main.c.dbg.obj b/Lab4/kernel/arch/aarch64/main.c.dbg.obj
index e4a1aa59..120a2a84 100644
Binary files a/Lab4/kernel/arch/aarch64/main.c.dbg.obj and b/Lab4/kernel/arch/aarch64/main.c.dbg.obj differ
diff --git a/Lab4/kernel/arch/aarch64/main.c.obj b/Lab4/kernel/arch/aarch64/main.c.obj
index 58b7e46a..3c731cf6 100644
Binary files a/Lab4/kernel/arch/aarch64/main.c.obj and b/Lab4/kernel/arch/aarch64/main.c.obj differ
diff --git a/Lab4/kernel/arch/aarch64/plat/raspi3/irq/timer.c b/Lab4/kernel/arch/aarch64/plat/raspi3/irq/timer.c
index bc117496..c843cd81 100644
--- a/Lab4/kernel/arch/aarch64/plat/raspi3/irq/timer.c
+++ b/Lab4/kernel/arch/aarch64/plat/raspi3/irq/timer.c
@@ -64,8 +64,7 @@ void plat_timer_init(void)
 	/* Write timer_ctl to the control register (cntp_ctl_el0) */
 
 	/* LAB 4 TODO END (exercise 5) */
-
-	test_timer_init();
+	lab4_test_timer_init();
 	return;
 }
 
diff --git a/Lab4/kernel/object/thread.c.dbg.obj b/Lab4/kernel/object/thread.c.dbg.obj
index ff7c88b7..3731393f 100644
Binary files a/Lab4/kernel/object/thread.c.dbg.obj and b/Lab4/kernel/object/thread.c.dbg.obj differ
diff --git a/Lab4/kernel/object/thread.c.obj b/Lab4/kernel/object/thread.c.obj
index 61f142c6..0d9add72 100644
Binary files a/Lab4/kernel/object/thread.c.obj and b/Lab4/kernel/object/thread.c.obj differ
diff --git a/Lab4/kernel/sched/policy_rr.c b/Lab4/kernel/sched/policy_rr.c
index 3b8f9151..ab070876 100644
--- a/Lab4/kernel/sched/policy_rr.c
+++ b/Lab4/kernel/sched/policy_rr.c
@@ -292,7 +292,7 @@ int rr_sched_init(void)
 
         /* LAB 4 TODO END (exercise 1) */
 
-        test_scheduler_meta();
+        lab4_test_scheduler_meta();
         return 0;
 }
 
diff --git a/Lab4/kernel/tests/runtime/CMakeLists.txt b/Lab4/kernel/tests/runtime/CMakeLists.txt
index 8b168868..eaa8634e 100644
--- a/Lab4/kernel/tests/runtime/CMakeLists.txt
+++ b/Lab4/kernel/tests/runtime/CMakeLists.txt
@@ -8,5 +8,5 @@
 # PURPOSE.
 # See the Mulan PSL v2 for more details.
 
-target_sources(${kernel_target} PRIVATE lab4.c.obj)
+chcore_target_precompile(${kernel_target} PRIVATE tests.c)
 target_include_directories(${kernel_target} PRIVATE ../)
diff --git a/Lab4/kernel/tests/runtime/lab4.c.obj b/Lab4/kernel/tests/runtime/lab4.c.obj
deleted file mode 100644
index fc5fd27a..00000000
Binary files a/Lab4/kernel/tests/runtime/lab4.c.obj and /dev/null differ
diff --git a/Lab4/kernel/tests/runtime/tests.c.dbg.obj b/Lab4/kernel/tests/runtime/tests.c.dbg.obj
new file mode 100644
index 00000000..24a7e194
Binary files /dev/null and b/Lab4/kernel/tests/runtime/tests.c.dbg.obj differ
diff --git a/Lab4/kernel/tests/runtime/tests.c.obj b/Lab4/kernel/tests/runtime/tests.c.obj
new file mode 100644
index 00000000..e1a36252
Binary files /dev/null and b/Lab4/kernel/tests/runtime/tests.c.obj differ
diff --git a/Lab4/kernel/tests/runtime/tests.h b/Lab4/kernel/tests/runtime/tests.h
index 81bc51e3..5d53f624 100644
--- a/Lab4/kernel/tests/runtime/tests.h
+++ b/Lab4/kernel/tests/runtime/tests.h
@@ -13,26 +13,9 @@
 #ifndef KERNEL_TESTS_RUNTIME_TESTS_H
 #define KERNEL_TESTS_RUNTIME_TESTS_H
 
-#define lab_check(expr, test_name)                                        \
-        do {                                                              \
-                if (expr) {                                               \
-                        printk("[TEST] %s: OK\n", test_name);             \
-                } else {                                                  \
-                        printk("[TEST] %s: FAIL, loc: %s:%d\n", \
-                               test_name,                                 \
-                               __FILE__,                                  \
-                               __LINE__);                                 \
-                }                                                         \
-        } while (0)
-
-#define lab_assert(expr)           \
-        do {                       \
-                ok = ok && (expr); \
-        } while (0)
-
-void test_scheduler_meta(void);
-void test_schedule_enqueue(struct thread *root_thread);
-void test_schedule_dequeue(void);
-void test_timer_init(void);
-
+#define TEST_SUITE(lab, name, ...) void lab##_##name(__VA_ARGS__)
+TEST_SUITE(lab4, test_sched_enqueue, struct thread *root_thread);
+TEST_SUITE(lab4, test_sched_dequeue, void);
+TEST_SUITE(lab4, test_scheduler_meta, void);
+TEST_SUITE(lab4, test_timer_init, void);
 #endif /* KERNEL_TESTS_RUNTIME_TESTS_H */
diff --git a/Lab4/scores.json b/Lab4/scores.json
new file mode 100644
index 00000000..63aca615
--- /dev/null
+++ b/Lab4/scores.json
@@ -0,0 +1,35 @@
+[
+  {
+    "capture": "test_scheduler_meta: OK",
+    "msg": "Scheduler Initialization",
+    "proposed": 10
+  },
+  {
+    "capture": "test_sched_enqueue: OK",
+    "msg": "Scheduler Enqueue",
+    "proposed": 10
+  },
+  {
+    "capture": "test_sched_dequeue: OK",
+    "msg": "Scheduler Dequeue",
+    "proposed": 10
+  },
+  {
+    "capture": "Cooperative Scheduling Test Done!",
+    "msg": "Cooperative Scheduling",
+    "proposed": 20,
+	"userland": true
+  },
+  {
+    "capture": "Preemptive Scheduling Test Done!",
+	"msg": "Preemptive Scheduling",
+	"proposed": 20,
+	"userland": true
+  },
+  {
+    "capture": "Test IPC finished!",
+    "msg": "Test IPC",
+    "proposed": 30,
+    "userland": true
+  }
+]
diff --git a/Lab4/user/system-services/system-servers/procmgr/procmgr.c b/Lab4/user/system-services/system-servers/procmgr/procmgr.c
index 33628190..2bcb889d 100644
--- a/Lab4/user/system-services/system-servers/procmgr/procmgr.c
+++ b/Lab4/user/system-services/system-servers/procmgr/procmgr.c
@@ -678,6 +678,60 @@ void boot_default_apps(void)
 #endif
 }
 
+static void bind_to_cpu(int cpu)
+{
+        cpu_set_t mask;
+
+        CPU_ZERO(&mask);
+        CPU_SET(cpu, &mask);
+        sched_setaffinity(0, sizeof(mask), &mask);
+
+        /*
+         * Invoke usys_yield to ensure current thread to run on the target CPU.
+         * If current thread is running on another CPU, it will be migrated to
+         * the specific CPU after setting affinity.
+        */
+        usys_yield();
+}
+
+void *thread_routine1(void *arg)
+{
+        bind_to_cpu(0);
+        for (int i = 0; i < 3; ++i) {
+                printf("Hello from thread 2\n");
+                usys_yield();
+        }
+        printf("Cooperative Schedluing Test Done!\n");
+        return NULL;
+}
+
+void *thread_routine2(void *arg)
+{
+        printf("Hello, I am thread 3. I'm spinning.\n");
+
+        while (1) {
+        }
+        return 0;
+}
+
+void test_sched(void)
+{
+        pthread_t tid;
+        pthread_create(&tid, NULL, thread_routine1, NULL);
+        usys_yield();
+        for (int i = 0; i < 3; ++i) {
+                printf("Hello from thread 1\n");
+                usys_yield();
+        }
+        pthread_join(tid, NULL);
+
+        printf("Thread 1 creates a spinning thread!\n");
+        pthread_create(&tid, NULL, thread_routine2, NULL);
+        usys_yield();
+        printf("Thread 1 successfully regains the control!\n");
+        printf("Preemptive Schedluing Test Done!\n");
+}
+
 int main(int argc, char *argv[], char *envp[])
 {
         cap_t cap;
@@ -694,6 +748,7 @@ int main(int argc, char *argv[], char *envp[])
 
         init_root_proc_node();
 
+        test_sched();
         boot_default_servers();
 
         /* Configure system servers, and boot some of them. */
diff --git a/Pages/Getting-started.md b/Pages/Getting-started.md
index d935bfd2..c7011be6 100644
--- a/Pages/Getting-started.md
+++ b/Pages/Getting-started.md
@@ -8,7 +8,16 @@
 请按照Docker官方指示为你运行的操作系统安装对应的Docker发行版。
 
 > [!IMPORTANT] 关于Docker
-> 由于中国大陆地区的网络限制，请确保你的docker能够连接到docker-hub，测试方法可以使用 `docker pull nginx:latest`，如果无法访问，您可以依照[该文档](https://docs.docker.com/engine/daemon/)为你的docker daemon添加代理规则。
+> 由于中国大陆地区的网络限制，请确保你的docker能够连接到docker-hub，测试方法可以使用 `docker pull nginx:latest`，如果无法访问，您可以依照[该文档](https://docs.docker.com/engine/daemon/)为你的docker daemon添加代理规则。  
+> 如果你缺少代理，你可以使用这个[链接(提取uwuv)](https://pan.baidu.com/s/1ipbMZ-C1Qk0S9PGDDMMy6w)下载压缩好的Docker镜像，镜像使用`zstd`进行压缩。你可以使用以下的命令解压后，再使用`docker`进行导入。
+>
+> ```
+> zstd -d docker.ipads.oslab.yy.mm.tar.zstd
+> docker load -i docker.ipads.oslab.yy.mm.tar
+> ```
+
+> [!IMPORTANT] 关于虚拟机
+> 如果你使用的是Windows/MacOS系统，如果不想手动安装docker以及下载镜像，我们也准备了基于VMWare 17的虚拟机镜像，你可以在这个[链接(提取uwuv)](https://pan.baidu.com/s/1ipbMZ-C1Qk0S9PGDDMMy6w)找到，你可以在解压之后导入vmware即可使用。用户stu 密码为123456
 
 ### 使用Dev-Container (推荐)
 
diff --git a/Scripts/chbuild b/Scripts/chbuild
index 6949a8bd..4f9d859a 100755
--- a/Scripts/chbuild
+++ b/Scripts/chbuild
@@ -279,7 +279,7 @@ _docker_run() {
             -u $(id -u ${USER}):$(id -g ${USER}) \
             -v ${LABROOT}:${LABROOT} -w $(pwd) \
             --security-opt=seccomp:unconfined \
-            ipads/chcore_builder:v1.9.0 \
+            ipads/oslab:24.09 \
             $self $@
     fi
 }