1. You need to open Niujia Village in the next world and successfully clear Niujia Village.
2. After playing the game, there will be a stone platform in Niujia Village in the inner world, which needs to be clicked.
3. Return to Wuliangyu Stone Monument to trigger, as shown below.
4. Just start the first mission. If you want to start the second mission, you need to clear the inner world of Qixia Town.
