Introduction to Guan Gong's ink: The mountain carved with hundreds of precious stones is called Guan Gong's Pointing General Platform. According to legend, during the Three Kingdoms period, Guan Yu once trained sailors here. Because Guan Gong had a serious face, sailors would be very nervous when practicing in front of him. Therefore, Guan Yu stood on the top of the mountain to watch the sailors train. There are four words "Green Waters and Green Mountains" at the place where the platform is 2 meters away from the water at Guan Gong Point.