Observe the textbook Figure 3-5 "Settlement Time on Mekong Plain"

* * * The similarity is that the roof has a large inclination. In order to facilitate rapid drainage (precipitation), there is more precipitation in both places. South China has a subtropical monsoon climate, while Mekong River has a tropical monsoon climate.

The difference is: (1) The roof of Mekong River has a large inclination, and the annual precipitation in tropical monsoon climate can reach about 1500MM.

② Most houses on the Mekong River are tall buildings made of bamboo. The lower floor of a high-rise building is used as a barn, and the upper floor is occupied by people. Cool and ventilated, not only makes the room dry, but also avoids the invasion of snakes and beasts.