Xiaoqing River, a tributary of Haihe River, is a tributary of Juma River to the north of Daqing River. Originated in Yangjuantou Village, Changxindian Town, Fengtai District, Beijing, it flows south parallel to Yongding River. Above Fengtai Changxindian is called Yaba River, and below Daning flood detention area is called Xiaoqing River. It flows through Fengtai District and Fangshan District, leaves the city near Bajianfang in Fangshan District and enters Zhuozhou City, Hebei Province, and enters Juma River in Beijiang, Xiaoliu Village, Matou Town, Zhuozhou City. This river is 34.8 kilometers long and covers an area of 436 square kilometers.

There are Chongqing Reservoir (the junction of Fengtai District and Fangshan District) and Lujiatan Reservoir (Mentougou District) on the tributary Hedgehog River, and Daning Reservoir (the junction of Fengtai District and Fangshan District) on the main stream. Xiaoqing River is an intermittent river, which has been used as a flood diversion channel of Yongding River for generations. The flood diversion hub project of Lugou Bridge on Yongding River was built in the upstream of Lugou Bridge, and Daning Reservoir was expanded into a flood mitigation reservoir to reduce the peak flood diversion and alleviate the downstream disaster.

Beijing snack

Snowballing usury, also known as bean paste stuffing cake, is a famous traditional snack in Beijing, which is made of bean paste stuffing, sugar and sesame. It is very popular in Beijing, and it is also an essential snack for old Beijingers in the New Year. Bowling is one of the most distinctive snacks in old Beijing. Because its finished product in Huang Chengcheng is like a donkey skin that has just been soaked in water, the locals call it "snowballing".

It is said that this dish was a famous snack in Beijing during Xianfeng period of Qing Dynasty. Mainly tripe, the taste is crisp, fragrant but not greasy, which is a perfect match with Beijing Erguotou. Eating tripe is really cool. Braised pork is the most famous traditional snack in Beijing, which started in the Ming Dynasty and is mainly made of cooked pig intestines, pig lungs and burnt pork.

Reference to the above content: Baidu Encyclopedia-Xiaoqing River