diff --git a/src/main/java/org/auioc/mcmod/arnicalib/utils/game/NbtUtils.java b/src/main/java/org/auioc/mcmod/arnicalib/utils/game/NbtUtils.java
new file mode 100644
index 00000000..5eefaa66
--- /dev/null
+++ b/src/main/java/org/auioc/mcmod/arnicalib/utils/game/NbtUtils.java
@@ -0,0 +1,49 @@
+package org.auioc.mcmod.arnicalib.utils.game;
+
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.DoubleTag;
+import net.minecraft.nbt.ListTag;
+import net.minecraft.world.phys.AABB;
+
+public class NbtUtils {
+
+    public static ListTag writeDoubleArray(double... values) {
+        var listTag = new ListTag();
+        for (int i = 0; i < values.length; i++) {
+            listTag.addTag(i, DoubleTag.valueOf(values[i]));
+        }
+        return listTag;
+    }
+
+    public static double[] readDoubleArray(ListTag nbt) {
+        int size = nbt.size();
+        var result = new double[size];
+        for (int i = 0; i < size; i++) {
+            result[i] = nbt.getDouble(i);
+        }
+        return result;
+    }
+
+    public static ListTag getDoubleListTag(CompoundTag nbt, String key) {
+        return nbt.getList(key, 6);
+    }
+
+    public static double[] getDoubleArray(CompoundTag nbt, String key) {
+        return readDoubleArray(getDoubleListTag(nbt, key));
+    }
+
+
+    public static ListTag writeAABB(AABB aabb) {
+        return writeDoubleArray(aabb.minX, aabb.minY, aabb.minZ, aabb.maxX, aabb.maxY, aabb.maxZ);
+    }
+
+    public static AABB readAABB(ListTag nbt) {
+        double[] p = readDoubleArray(nbt);
+        return new AABB(p[0], p[1], p[2], p[3], p[4], p[5]);
+    }
+
+    public static AABB getAABB(CompoundTag nbt, String key) {
+        return readAABB(getDoubleListTag(nbt, key));
+    }
+
+}