The grand Rir(also transliterated^z.av-ru)prairie,situated at the northeast of Zogye County,Sichuan Province,is the water fountainhead and conservation area of the upper reaches of the Yellow River.At the center of the vast highland wetland,there is a charming place the people call Flower Lake,along the bank of which is an absolute abundance of verdant grass.The various birds inhabiting the central portion make the place feel like a veritable paradise.