On this day, 169 years ago, February 29, 1856 (January 24, 1856, the Ma Priest incident. On February 29, 1856, Ma Lai, a French priest who illegally invaded Xilin County, Guangxi, was arrested and punished. It was known in history as the "Xilin Case Plan" and also known as the "Ma Priest Incident." The China-France Huangpu Treaty allows France to establish Catholic schools at my country's treaty ports. In order to further gain the legal status of preaching in the mainland and realize its ambition of using religion to carry out aggressive activities, France allowed priests to privately enter the mainland to preach. In 1853, French Catholic priest Ma Lai illegally sneaked into Xilin County, Guangxi from Guangzhou, colluded with the government to shield believers Ma Jinong, Lin Ba and others from robbing, raping and raping, arousing public anger. Today, the new magistrate Zhang Mingfeng arrested Ma Lai and 26 other illegal believers and executed Ma Lai and two China believers for the most heinous crimes. In order to further gain church support, consolidate military dictatorship and expand the overseas rights and interests of the big bourgeoisie, French Emperor Napoleon III used this as an excuse to put forward the slogan of "fight to protect the Holy Church" and joined forces with Britain to send troops to invade China the following year. provoked the second Opium War.