Introduction to Laojun Hall: Laojun Hall is the earliest and tallest building in Yuquan Temple. It started in the Yuan Dynasty and was built in the Ming Dynasty. It is built on 64 steps, taking the meaning of Laojun's 64 hexagrams. To the east of Laojun Hall is Wenshu Palace, to the west is Wenchang Palace, and to the southwest is Beidou Palace. The original Shanmen Archway in front of Beidou Palace is in a straight line with the Feijiangxiang Archway and Nanguo Temple Archway in Tianshui City, which reflects the amazing wisdom and superb skills of the ancient working people. Now Laojun Hall has been destroyed, only the tall single-eaves hanging top archway in front of the hall still exists.