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There are many causes of human suffering, and improper distribution of social wealth is one of them. Improper distribution of social wealth has many manifestations, and human suffering is the most direct and quickest consequence. In an era when land was the main source of wealth, the state of the land was an important yardstick to measure whether social wealth was improperly distributed. If this yardstick was seriously imbalanced, human suffering would be inevitable, with symptoms such as hunger, turmoil, and wandering. Based on the instinct of survival, the suffering people will spontaneously migrate to adapt to the objective situation and try to find an exit in life. Regardless of whether such a goal can be achieved, movement has become a state of existence for the public, even if it is only for a time.