Polylang Issue with Portfolio

Hi, I’ve installed Polylang plugin in Betheme wordpress. After that I found that Polylang didn’t work with the portfolio. I already manual translate it into English and Chinese. But then when I viewed in the website, it didn’t displayed/ filter out that category after I have clicked on certain portfolio categories (for Chinese translation’s page).

May I know, what’s the issue and how to solve it? Thanks.