Zhejiang consists mostly of hills, which account for about 70% of its total area. Altitudes tend to be the highest to the south and west and the highest peak of the province, Huangmaojian Peak (1,929 meters or 6,329 feet), is located there. Other prominent mountains include Mounts Yandang, Tianmu, Tiantai, and Mogan, which reach altitudes of 700 to 1,500 meters (2,300 to 4,900 ft).
Try to answer this question if possible (otherwise reply "unanswerable"):  What does Zhejiang not consist mostly of?
unanswerable