Ma Shi Lake is specially recommended by the front desk of our hotel. It is said to be the largest man-excavated Lake in Europe. The surrounding ecology is very good. Today, I walked for almost three and a half hours, stopping and walking, very tired. It can only be said that the lake's surroundings are not very interesting, but the ecology is excellent. Many people walk, run, ride bicycles, roller skate and so on. Others play sailboats and kayaks on it. There's a new town hall and a museum around, and a university. The transportation is also convenient. There will be a shortage of food and water, as well as toilets.