https://www.cnblogs.com/gavin-num1/p/5170247.html
ASCII，Unicode和UTF-8终于找到一个能完全搞清楚的文章了
https://blog.csdn.net/Deft_MKJing/article/details/79460485
UNICODE,GBK,UTF-8区别
原文：https://www.cnblogs.com/nanahome/p/10995036.html
