The south gate of the Xi’an City Wall is Yongning Gate. It’s often referred to as South Gate. The gate was constructed during the early years of the Sui Dynasty. It is the city gate that has been around the oldest in Xi’an. It is the gate that is on the east side of the three gates of the imperial city for the Sui Dynasty. The Chinese people have the belief that the south is where you will find the god of fire. Thus the south gate, which is known as Yongning, is intended to be used to pray to god of fire.