The Pui Tak Center (Chinese: 培德中心; pinyin: Péidé Zhōngxīn; Jyutping: pui4 dak1 zung1 sam1; Cantonese Yale: Pùihdāk Jūngsām; literally: "cultivating virtue center"), formerly known as the On Leong Merchants Association Building, is a building located in Chicago's Chinatown. Designed by architects Christian S. Michaelsen and Sigurd A. Rognstad, the building was built for the On Leong Merchants Association and opened in 1928. The Association used it as an immigrant assistance center, and the building was informally referred to as Chinatown's "city hall". In 1988, the FBI and Chicago Police raided the building as part of a racketeering investigation.