I have only been to Jiantou and Guohua Wind Fields in Zhangjiakou, Hebei Province and the wind fields in Long Yuan, Datang and Huaneng in the northeast. Most of them are flat, but the altitude (such as Zhangbei area) is not low, and the density of fans is really high. Because the assembly is relatively easy, 1.5MW and 2MW machines are generally installed; But there are also hills and ridges, such as the wind field in Huanren, Liaoning. Due to the trouble in installation, minicomputers (such as Goldwind Direct Drive or the previous Goldwind 750 and Gemeisa 850) are generally installed.

For example, in the case of Hebei wind farm, it usually takes more than 200T cranes to replace Dongdong. I have only seen the largest crane of 500T, and there are many car cranes (many people in Xuanhua area make a fortune by this), and the rest are not clear, hehe.