Shichahai refers to Qianhai, Houhai and Xihai lakes and their adjacent areas. It has a large area of beautiful lakes and is also a famous historical block in Beijing. If you like postcards, you can turn to the Daqing Post Office on the inclined street of cigarette bags, knock on some beautifully decorated postmarks at the post office, and let the shopkeepers send them out for you on the selected future days. There are many bars around Shichahai. There are lots of songs. Behind the bars are stories of the "Beipiao" people. Dou Wei, a rock singer, has been stationed in Shichahai for three years. After going through bars and stopping to listen, I can hear the enthusiasm for music and the desire for overnight fame from the singing.