Observation Deck Introduction: The Twenty-Siguai Observation Deck is located in Qinglong Mountain, 7 kilometers south of the county. It is known as the highest shining pearl in the southwest of the county. The entire observation deck consists of a four-story main building plus a viewing spiral staircase and viewing walkway, with a total land area of ​​9994 square meters and a construction area of ​​approximately 3918 square meters.