Cause: The humiliation that both the Chinese and the qing dynasty had suffered. The spread of Christianity, missionaries and also foreigners motivated them to also start the boxer rebellion.
Course: The boxers believed that by training hard enough, they can achieve a stage that they can be immortal to English weapons such as guns. They grouped up and started killing missionaries and foreigners whenever they see one. Soon enough, they had the Legation Quarter controlled and help captive of some missionaries, foreigners, and Christians. Many of the Foreigners were hoping for the relief army to come.
Consequences: After being defeated, it opened out more trading routes for foreign countries, China was forbidden to transport firearms into the country for 2 years, and lastly, was forced to pay 330 million dollars to the western powers.