Mobile phone: Xiaomi k40
System: Android 12.8
Software: Shen Yuan 1 1. 18.
1. Dig a big pit in the open space, the size is self-determined.
2. Then, take the basement stairs to connect the ground and the basement. Next, cover the basement, set aside four rows of space along the stairs, and then enclose it with squares to prevent monsters from entering.
3. Insert the flashlight into the underground space. After all this, the basement will be completed.