diff --git a/src/main/java/top/r3944realms/lib39/Lib39.java b/src/main/java/top/r3944realms/lib39/Lib39.java
new file mode 100644
index 0000000..b895bdc
--- /dev/null
+++ b/src/main/java/top/r3944realms/lib39/Lib39.java
@@ -0,0 +1,52 @@
+package top.r3944realms.lib39;
+
+import com.mojang.logging.LogUtils;
+import net.minecraft.client.Minecraft;
+import net.neoforged.api.distmarker.Dist;
+import net.neoforged.bus.api.IEventBus;
+import net.neoforged.bus.api.SubscribeEvent;
+import net.neoforged.fml.ModContainer;
+import net.neoforged.fml.common.EventBusSubscriber;
+import net.neoforged.fml.common.Mod;
+import net.neoforged.fml.event.lifecycle.FMLClientSetupEvent;
+import net.neoforged.fml.event.lifecycle.FMLCommonSetupEvent;
+import net.neoforged.neoforge.common.NeoForge;
+import net.neoforged.neoforge.event.server.ServerStartingEvent;
+import org.slf4j.Logger;
+import top.r3944realms.lib39.contents.Lib39Blocks;
+import top.r3944realms.lib39.contents.Lib39CreativeModeTab;
+import top.r3944realms.lib39.contents.Lib39Items;
+
+@Mod(Lib39.MOD_ID)
+public class Lib39 {
+    public static final String MOD_ID = "lib39";
+    private static final Logger LOGGER = LogUtils.getLogger();
+
+    public Lib39(IEventBus modEventBus, ModContainer modContainer) {
+        modEventBus.addListener(this::commonSetup);
+
+        Lib39Items.ITEMS.register(modEventBus);
+        Lib39Blocks.BLOCKS.register(modEventBus);
+        Lib39CreativeModeTab.CREATIVE_MODE_TABS.register(modEventBus);
+
+        NeoForge.EVENT_BUS.register(this);
+    }
+
+    private void commonSetup(final FMLCommonSetupEvent event) {
+        LOGGER.info("Lib39 common setup complete");
+    }
+
+    @SubscribeEvent
+    public void onServerStarting(ServerStartingEvent event) {
+        LOGGER.info("Lib39 server starting");
+    }
+
+    @EventBusSubscriber(modid = MOD_ID, value = Dist.CLIENT)
+    public static class ClientModEvents {
+        @SubscribeEvent
+        static void onClientSetup(FMLClientSetupEvent event) {
+            LOGGER.info("Lib39 client setup");
+            LOGGER.info("Player: {}", Minecraft.getInstance().getUser().getName());
+        }
+    }
+}
diff --git a/src/main/java/top/r3944realms/lib39/contents/Lib39Blocks.java b/src/main/java/top/r3944realms/lib39/contents/Lib39Blocks.java
new file mode 100644
index 0000000..e8b50c9
--- /dev/null
+++ b/src/main/java/top/r3944realms/lib39/contents/Lib39Blocks.java
@@ -0,0 +1,8 @@
+package top.r3944realms.lib39.contents;
+
+import net.neoforged.neoforge.registries.DeferredRegister;
+import top.r3944realms.lib39.Lib39;
+
+public class Lib39Blocks {
+    public static final DeferredRegister.Blocks BLOCKS = DeferredRegister.createBlocks(Lib39.MOD_ID);
+}
diff --git a/src/main/java/top/r3944realms/lib39/contents/Lib39CreativeModeTab.java b/src/main/java/top/r3944realms/lib39/contents/Lib39CreativeModeTab.java
new file mode 100644
index 0000000..60cf0cd
--- /dev/null
+++ b/src/main/java/top/r3944realms/lib39/contents/Lib39CreativeModeTab.java
@@ -0,0 +1,22 @@
+package top.r3944realms.lib39.contents;
+
+import net.minecraft.core.registries.Registries;
+import net.minecraft.network.chat.Component;
+import net.minecraft.world.item.CreativeModeTab;
+import net.neoforged.neoforge.registries.DeferredHolder;
+import net.neoforged.neoforge.registries.DeferredRegister;
+import top.r3944realms.lib39.Lib39;
+
+public class Lib39CreativeModeTab {
+    public static final DeferredRegister<CreativeModeTab> CREATIVE_MODE_TABS =
+            DeferredRegister.create(Registries.CREATIVE_MODE_TAB, Lib39.MOD_ID);
+
+    public static final DeferredHolder<CreativeModeTab, CreativeModeTab> MAIN_TAB = CREATIVE_MODE_TABS.register("main",
+            () -> CreativeModeTab.builder()
+                    .title(Component.translatable("itemGroup.lib39"))
+                    .icon(() -> Lib39Items.ICON_ITEM.get().getDefaultInstance())
+                    .displayItems((params, output) -> {
+                        output.accept(Lib39Items.ICON_ITEM.get());
+                    })
+                    .build());
+}
diff --git a/src/main/java/top/r3944realms/lib39/contents/Lib39Items.java b/src/main/java/top/r3944realms/lib39/contents/Lib39Items.java
new file mode 100644
index 0000000..c3649d3
--- /dev/null
+++ b/src/main/java/top/r3944realms/lib39/contents/Lib39Items.java
@@ -0,0 +1,12 @@
+package top.r3944realms.lib39.contents;
+
+import net.minecraft.world.item.Item;
+import net.neoforged.neoforge.registries.DeferredItem;
+import net.neoforged.neoforge.registries.DeferredRegister;
+import top.r3944realms.lib39.Lib39;
+
+public class Lib39Items {
+    public static final DeferredRegister.Items ITEMS = DeferredRegister.createItems(Lib39.MOD_ID);
+
+    public static final DeferredItem<Item> ICON_ITEM = ITEMS.registerSimpleItem("icon_item");
+}
diff --git a/src/main/resources/lib39.mixins.json b/src/main/resources/lib39.mixins.json
new file mode 100644
index 0000000..311afb9
--- /dev/null
+++ b/src/main/resources/lib39.mixins.json
@@ -0,0 +1,16 @@
+{
+  "required": true,
+  "minVersion": "0.8",
+  "package": "top.r3944realms.lib39.mixin",
+  "compatibilityLevel": "JAVA_25",
+  "mixins": [
+  ],
+  "client": [
+  ],
+  "injectors": {
+    "defaultRequire": 1
+  },
+  "overwrites": {
+    "requireAnnotations": true
+  }
+}