The Summit of Pi

Mount Ai EL+197.2 In ancient times, there was a saying that 'the summit of the state is Mount Tai; the summit of Pi is Mount Ai'. This mountain was the national guardian mountain of the ancient State of Xu, and an Ai-character tripod was once cast here. Mount Ai's nine peaks wind like nine dragons lying in repose, hence it is also known as Nine Dragons Mountain. Legend has it that Zhang Liang received a book here, and Xu Shu of the Three Kingdoms era retired to this mountain.