On the east of Emei Mountain-Golden summit, there are a cliff which over 800 meters above the hillside.The cliff is every steep, here is Peng Wencai's working place. With a rope,a bag and that's all he need.He says, when he go down to 200 meters under the cliff need about 40 minutes,but plus the time for pick up garbage and climb the hill, he need 3 hours unless to finish one turn.That is a challenge in both psychological and physical. A lot people asked him "are you afraid?" he said : "of course, with a rope, a wire, if you don't watch out, you will die." https://goo.gl/1v0eU9