総理各国事務衙門
In response to the event, the French chargé d'affaires in Beijing, Henri de Bellonet, took a number of initiatives without consulting Quai d'Orsay. Bellonet sent a note to the Zongli Yamen threatening to occupy Korea, and he also gave the French Naval Commander in the Far East, rear admiral Pierre-Gustave Roze instructions to launch a punitive expedition against Korea, to which Roze responded: "Since [the kingdom of] Choson killed nine French priests, we shall avenge by killing 9,000 Koreans."