The Caohai is really beautiful. The best season is July and August. The grass is lush and the clouds and rain in the sky are as if they can break into your heart. Walk up the small river ditch that enters the Caohai. After a village in the south of Sanyi, there is another water pool, named Bailongtan. Bailongtan is based on Jiuding Mountain (the mountain is named after Jiuding, just the first picture), Bailongtan water originated from Jiuding Mountain, the water quality is excellent, cool and delicious, and many people around will go to the outlet to collect water to drink.