Can you build a pit house in the south?

Digongyuan, also known as Tianjingyuan, Digongyuan, locally known as "Tianjingyuan", "Diyinkeng", "Diyao", is a remnant of the ancient way of people living in caves, known as the "underground courtyard" in northern China, the north has more plains, the south is hilly and other terrain, which leads to the south will hardly appear. North China's "underground courtyard", the north more plains, the south is hilly and other terrain, which also led to the south almost does not appear underground courtyard and other buildings, and the south of the rainfall is more, the soil is loose, and the climate is more humid, so it is not suitable for the construction of the pit house, easy to be flooded.