Introduction to Tiankai Rock: Tiankai Rock is located on the north side of Hehuashan Pavilion in Fengling, Qixia Mountain. The rock walls here are rugged and steep, with a straight line in the middle. A closer look at the cliff reveals many famous inscriptions, including "Xingshi", "Yingbin Stone", "Tiankai Cliff", "Bi Mos Pavilion" written by people of the Six Dynasties, etc. Xu Kai and Zhang Zhigui of the Southern Tang Dynasty also had inscriptions.