Gu rattan valley, common name "brook ditch", is famous for its strangeness. Is the original boundless wild botanical garden, is a natural ecological landscape of the mian mountain. Valley feiquan hanging waterfall falls from the sky, streams yongquan everywhere. According to the historical records, this place was once one of the cradles of the mianshan jinglin river. It was also the place where linghu chu, the famous prime minister of tang dynasty, founded jinglin academy.