Introduction to Zhongtian Gate: Zhongtian Gate, also known as Ertian Gate, is located in the north of Hutian Pavilion. The high mountains here block the ravine, and the most famous of the nine temples with earthy yellow and red colors is Taishan Nainai Temple, named Huangxianling, which is the birthplace of Zhongxi. There is a Zhongtianmen stone square on the top of the ridge. It is said that there are many tigers in Mount Tai, so the ancients built two tiger temples in the east of the square to worship the black tiger god to suppress the mountain beasts. The back hall was destroyed. In 1972, the small temple was demolished and a cloister-style kiosk was expanded. In 1989, the name of the Erhu Temple was restored. It has a statue of Marshal Zhao Gong, the God of Wealth, holding an iron whip and standing astride a black tiger, and painted murals.