Sorry, Cao, but I'm not. I think you need to do some reading:

One of the most prestigious first-tier medical journals: https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(19)32764-3/fulltext

https://www.nytimes.com/2018/10/25/opinion/sex-biology-binary.html

https://www.scientificamerican.com/article/sex-redefined-the-idea-of-2-sexes-is-overly-simplistic1/