Taihe Gate is the largest palace gate in the Forbidden City and the front door of the Palace of the Outer Dynasty. Taihe Gate was built in the eighteenth year of Yongle in the Ming Dynasty. It was called Tianmen at that time. In the fourteenth year of the Qing Dynasty, Guangxu was burned and rebuilt the following year. Taihe has 9 wide doors and 3 deep doors. Its building area is 1300 square meters. It overlays the top of the hill with double eaves. Under it, it is the base of Han Baiyu. Liang Fang and other components are painted with Hexie paintings. A pair of bronze lions and four bronze tripod in front of Taihe Gate were cast in Ming Dynasty. In the Ming Dynasty, Taihe Gate was the place where the imperial gate listened to politics. The emperor accepted the worship and performance of his subordinates, issued edicts and handled affairs.