参考答案： Qinghai Lake is situated about about 100 kilometres west of the capital city of Qinghai province, Xining, at the altitude of 3,205 metres. With a surface area of 4,317 square kilometres, Qinghai Lake is the largest saline lake in China and its maximum depth is 25.5 meters. Twenty-three rivers and streams empty into Qinghai Lake, most of which are seasonal. Five permanent streams provide 80% of total influx. The lake is located at the crossroads of several bird migration routes across Asia. Many species use Qinghai Lake as an intermediate stop during migration. On the western side of the lake lies the renowned “Bird Islands”, which attract bird-watchers from different parts of the world. Every summer, tourists also come here to watch the international cycling race.