Built during the reign of Emperor Wen of Sui Dynasty (581 – 618), Hanguang Gate was a part of the city wall of Sui and Tang Dynasties (618 – 907). At the end of the Tang Dynasty, Chang’an City was reconstructed. However, Hanguang Gate still functioned as an important gate of the city. During the Yuan Dynasty (127 - 1368), it was buried into the city wall. Hanguang Gate was excavated in 1980s. In 2006, Xian Tang Imperial City Wall Museum was constructed on the ruins of the gate.