Wai Wu PuWai Wu Pu\ [Chinese wai foreign + wu affairs + pu office.] The Department of Foreign Affairs in the Chinese government. The Tsung-li Yamen, or Foreign Office, created by a decree of January 19, 1861, was in July, 1902, superseded by the formation of a new Foreign Office called the Wai Wu Pu, . . . with precedence before all other boards. --J. Scott Keltie.