It grew out of the
义和拳 ('Righteous and Harmonious Fists'), a martial-arts movement of Shandong and Zhili, which is why foreigners called its members Boxers. Under the slogan
扶清灭洋 ('support the Qing, wipe out the foreigners') they killed missionaries and Chinese Christians (
教民) and in 1900 besieged the foreign legations in Beijing, until the Eight-Nation Alliance (
八国联军) took the city.