Introduction to strangulation: The phenomenon of strangulation is a peculiar landscape in the tropical rainforest, which can be found everywhere in the Xishuangbanna tropical rainforest. Most of the strangulated plants are banyan trees. The seeds of these strangulated plants are mostly passed through bird droppings or blown by the wind to the trunks of palm trees, hemlock trees, etc. that are easy for banyan trees to grow. After germination, their roots are implanted at the bottom of the strangled plants. . The strangler plant wraps around the stems of palm trees, hemlock trees, etc., competing with the strangled plant for nutrients and water. The strangler slowly grows into a tropical plant that is both epiphytic and autonomous. After a few years, the roots of the strangled plants will firmly cut off the water supply of the palm trees and hemlock trees, and the strangled plants will gradually die due to lack of nutrients and water.