Gate of Supreme Harmony or front gate of the outer court was constructed during the reign of Emperor Yongle (1403-1424) of the Ming Dynasty.
The Gate of Supreme Harmony (simplified Chinese: 太和门; traditional Chinese: 太和門; pinyin: Tàihémén; Manchu: Amba hūwaliyambure duka), is the second major gate encountered when entering the Forbidden City from the south.