Since I spent a lot of time on it, I have to make a dedicated page.
At the beginning I searched for ways to include math equations in html, but I thought none of the websites give instruction well (Ok! I am not patient enough reading), and it suddenly crossed my mind that I could just read online research papers in html format and just copy and paste the code. Then I learnt mathjax. After I converted every equation and put the webpage on GitHub, the equations could not be displayed...The javascript of mathjax is blocked by GitHub. The fortunate thing is you can convert the equation in latex format to ASCII code. You can use
texmath
.
An online converter is available
here
.
Alternatively, if you want to convert your equations into png figures,
make4h
is an option. I tested and it is good. It is included in some versions of Latex, you might not need to install it.