Introduction to Nantianmen: Nantianmen is located in the Mengshan tourist area of ​​Feixian County. It was a stone square gate built in the spring of 1614 (the 42nd year of Wanli in the Ming Dynasty). It has been destroyed now. From the only remaining inscriptions on the stone beams on the original gate, it is known that the yang denomination of the square is inscribed "Wonderful Wonders on the Top of the Gate" and the yin denomination is inscribed "Eternal Wind and Cloud".