Ruili River

　　 The Ruili River is called Nanmao in the Dai language, meaning "the river veiled in white mist." Since Ruili is referred to as Mengmao in the Dai language, it is also known as the Mengmao River, and historically it was called the Luchuan River.

　　 The Ruili River originates from the watershed on the western side of the Gaoligong Mountains within Tengchong County and eventually flows into Myanmar, where it joins the Irrawaddy River.

　　 Within Ruili, the river stretches 53 kilometers in length and is 100–200 meters wide. The plains along both banks are flat, the land is fertile, the climate is warm and humid, making it a very rich and productive region for Dai people known for its fish and rice.

　　 The Daying River originates from Tengchong County. Its upper reaches are called the Danzha River, the middle reaches are known as the Binlang River, and it is only after reaching Xialaxian in the old urban area of Yingjiang County that it is called the Daying River. It flows out of China at the Nanpen River mouth in Yingjiang County and enters Myanmar, joining the Irrawaddy River.

　　 The Daying River has a total length of 204 kilometers, with 145.5 kilometers of it lying within Yingjiang County. The climate along both banks is mild, the land is fertile, and the area is rich in special local products, boasting abundant flora and fauna.

　　 Within Yingjiang County, the Daying River has a gentle riverbed, with the widest point reaching up to 1 kilometer, resulting in calm waters and occasionally sandbars and small islands in the river, home to many precious waterfowl such as wild ducks and swans. Along the nearly 100-kilometer stretch of the riverbank, the scenery is picturesque, with clear waters, green mountains, secluded bamboo groves, and lush forests.

　　 There is a reinforced concrete bridge over the river, which is 1 meter long and is one of the longest highway bridges in Yunnan Province.