排列三组6复式计算公式

简介：The Yellow River comes from the east of Qinghai, encounters the obstruction of the Helan Mountains and turns to the north, encounters the Yinshan Mountains and turns to the east, and then flows southward along the Luliang Mountains, forming a big bend here, hence the name Hetao. Due to the nourishment of the Yellow River, the Hetao Since ancient times, it has been a plain with abundant water and grass, densely covered with water networks, and is both arable and grazing. It is known as the "North of the Great Wall and the South of the Yangtze River".