Where is the source of Xiaodong River in Maoming?

Meijiang (Jiang Xiaodong) is the largest secondary tributary of Jianjiang and the largest primary tributary of Meihua River. Originating at the foot of Guanzhuang Mountain in Gaozhou, it flows through six towns in Maoming City and Maonan District and joins Meihua River in Wayao Village, Wuchuan. Meihuajiang is the second largest tributary of Jianjiang River. Originated in the south of E Huang Zhang in Dianbai County, its main tributaries are Jiang Xiaodong River, Guanzhu River, Huangling River, Dashe River, Miaobei River and Longji River. There are large and medium-sized reservoirs such as Luokeng and Huangsha in the upper reaches, and the trunk line flows through Dianbai and Maonan to join Jiang Xiaodong in Wayao Village, Wuchuan, and then to Mei? Enter jianjiang. Jianjiang River is the largest river in the coastal water system of Guangdong Province, with a main stream of 2 10 km long. Jianjiang river basin is the third largest river basin in Guangdong province, which is located in the southwest of Guangdong province, ranging from east longitude 1 10 20' to north latitude1120' to north latitude 2 1 15' and 22. Originated in Lishan, Xinyi City, it passes through Gaozhou, Huazhou and Meilong in the south and flows into the South China Sea in Huang Po, Wuchuan City. This is a tree-like water system. The main stream is 2 10 km long and the drainage area is 9445 square kilometers. Jianjiang originated in Xinyi City, and its main source hair originated from Zhangdongkeng, Zhuangdong Village, Dongzhen Town, the city. It flows downstream into seven main tributaries, including Shuangdong and Ding Bao, with a total length of 57 kilometers, and is called Jinjiang or Dongjiang. In this town, Longzhen joins another Xijiang River (49 kilometers long) that originated in Beijie Town, and then flows southward into Caojiangkou, Gaozhou City, which is called the River. Caojiangkou flows into the South China Sea from Huang Po, Huazhou, Maoming, Dianbai and Wuchuan in Xia Jing. This period of history is called Jianjiang, named after the clear water at that time. The whole river is a dendritic water system, with a total length of 233.8 kilometers and a drainage area of 9445 square kilometers. It is the largest river along the coast of western Guangdong.