DeepUnderWorld

1.修复地下世界传送门有时会生成在顶部基岩层的问题。

2.黑曜石可用铁镐挖掘，并且降低了挖掘时间。

3.随机传送符文石现在可以正常挖掘和掉落了。

4.修复出生点传送门传送位置不正确问题。

1.Fixed the issue where the Underworld portal would sometimes spawn on the top bedrock layer.

2.Obsidian can be mined using an iron pickaxe, and the mining time has been reduced.

3.Random Teleportation Runestones can now be excavated and dropped normally.

4.Fixed the issue of incorrect teleportation location through the teleportation portal at the spawn point.