The Yangzhou riot of August 22–23, 1868 was a brief crisis in Anglo-Chinese relations during the late Qing dynasty. The crisis was fomented by the gentry of Yangzhou who opposed the presence of foreign Christian missionaries in the city, who claimed that they were legally residing under the provisions of the Convention of Peking. Threats against the missionaries were circulated by large character posters placed around the city. Rumors followed that the foreigners were stealing babies and killing them to make medicine.