Reasons for the change in the slogan of the Boxer Rebellion: At first, the Qing government supported the Boxer Rebellion and gave it material assistance. However, after the Boxer Rebellion. The Qing government believed that the Boxer Rebellion was the main reason for Eight-Nation Alliance's invasion of China, so it began to suppress the Boxer Rebellion. Therefore, the slogan of the Boxer Rebellion changed from "helping to clear the ocean" to "clearing the ocean".

Brief introduction of boxer movement:

Boxer, also known as boxer. The Boxer Rebellion, also known as the "Boxer Rebellion", was a large-scale mass violence movement in China at the end of 19 with the slogan of "helping the Qing Dynasty to destroy the foreign countries", targeting westerners in China, including missionaries and Christians in China. In the Boxer Movement, it played a certain role in cracking down on imperialist powers and promoted the awakening of the people of China to a certain extent. However, its movement was generally exclusive, ignorant and cruel, and its own peasant movement was flawed and blind, which made it used by the Qing government, abandoned and failed, and became the fuse of Eight-Nation Alliance's invasion.