What is the historical background of the mysterious view in Suzhou?

During the Xianning period of the Western Jin Dynasty (275 ~ 279) 0/800 years ago, there was a Taoist shrine Zhenqing Taoist Temple in Suzhou, which was the earliest birthplace of the mysterious Taoist Temple. In the 16th year of Kaiyuan in Tang Dynasty (728), it was renamed Kaiyuan Palace. The last years of the Tang Dynasty perished. In the second year of the Northern Song Dynasty (1009), it was renamed Tianguangguan. Later, it was destroyed by the Jin people's invasion to the south, and it was rebuilt in the second year of Longxing (1 164), but in the sixth year (1 179), the main hall dedicated to the holy father caught fire and was rebuilt, so it was named Sanqing Hall. The general situation of the ancient Tianqing concept can be seen from the map of Pingjiangfu in Suzhou at that time: the outermost door is Xingxingmen, and the second door is heavier. On the right wing, it is connected with the east-west corridor through a mezzanine house. In the first year of Yuan Zheng Zhi (134 1), it was renamed as Xuanmiao Temple. But it was later destroyed by a fire, and it was changed into a jungle during the Hongwu period of the Ming Dynasty. In the Qing Dynasty, it was called Garden Temple View (Kangxi called it "Xuan", so it was changed to "Yuan").

The most famous mysterious temples are Sanqing Hall and Milo Baoge.