I should consider the following factors:
(1) Graphical User Interface, GUI. Mingming has told me that this is not a problem since ios also supports GUI and he says there is no difference. 
(2) The hard drive should be at least 512 GB. Are there C, D Drive in ios?
(3) I enjoy some window's software very much, such as Endnote, everything and MathType. I have checked all software in "程序与功能" in "控制面板" on Oct 1, 2018. There is no need to check again. Is there such software in ios?
(4) Operation: Are there any differences in the storage of movies, installing software?
(5) Google "windows txt mac 乱码" and there is a solution: https://www.zhihu.com/question/20353626; https://blog.csdn.net/baobeijuzi/article/details/43953641

Windows 7 -> 控制面板 -> 电源选项  -> 选择关闭盖子的功能 -> 休眠