Also known as "Longchi", located in Jinan City, Shandong Province, Pingyin County, Hongfanchi Town Government Road North, in Hongfanchiquan group, the most famous. The name of the pool originated from "Shangshu Hongfan", taking its flood to Fan's meaning. According to Qingdao Light Nine Years "Dong'e County Zhi", the pool "in the 15 miles of the south of the city... Quan Yang Tu on it, the stone is the pool". According to the 18 years of Qingdao Light "Repair Hongfanchi Monument": When the golden face is finished, the dragon pool is square and surrounded by stone. The edges are 7 meters long, the water depth is about 6 meters, and the crystal clear. The spring water is slowly overflowing from the bottom of the pool and the four-wall spring, and the daily surge is about 1,000 cubic meters. The stone railing is placed on the pool week, and there is a platform outside the railing. The water gushes out of the stone carving dragon mouth on the south side of the pool wall, and falls into a small pool of 2 meters square. It is connected to the stone channel that circles the dragon pool for a week, and then sinks into the wolf stream. The stone channel that flows through the spring is called the moon river, and there is a moon river bridge connecting the dragon pool and dragon raft. The pool water "does not fade with drought and floods, does not change the temperature in winter and summer". Because the spring water floats smoothly, coins can float on the water for many times, and the gold is shining through the sun. "Hong Fan Fujin" is a famous historical landscape.