Qianmen () is the colloquial name for Zhengyangmen (; Manchu: Tob šuni duka, meaning "gate of the zenith Sun"), a gate in Beijing's historic city wall. The gate is situated to the south of Tiananmen Square and once guarded the southern entry into the Inner City. Although much of Beijing's city walls were demolished, Qianmen remains an important geographical marker of the city. The city's central north-south axis passes through Zhengyangmen's main gate. It was formerly named Lizhengmen (), meaning "beautiful portal".