Its not hard to know this concept, plus your claim a minority use they is a personal bias of yours, many people in my circle continue to use He. Your declare is as legitimate as pondering everyone claims "whateva" or "innit" in sentences. gbjbaanb 知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 AMR of STIs https://hc6.org/