Cause of formation of Xize River trend in Yunnan Province

The flow direction of Xize River in Yunnan is determined by the local topography. Yunnan Xize River flows from southeast to northwest, and Yunnan Xize River is a tributary of Niulan River. Between Dongchuan District and Xuanwei City, Yunnan Province. Originated in the hilly area in the southeast of Xuanwei City. Through Xize and other towns, it flows into the main stream on the other side of Deze in Dongchuan City. It has a total length of 64 kilometers and a drainage area of 826 square kilometers. The annual average flow is 1 1.6 m3/s, and the natural drop is 584m.. The topography of China is generally high in the west and low in the east. Most rivers flow from west to east, but there are also some other rivers, from mountain to mountain, from south to north, and from north to south, mainly depending on the differences in topography. Not all rivers flow to the Pacific Ocean, such as the Tarim River in Xinjiang, and stop at Lop Nur. The Ili River flows into Kazakhstan and the Irtysh River flows into Russia.