Can I call the university teacher if I don't return to WeChat?
My personal suggestion is to wait. If you send an important message to your teacher and he doesn't reply to you all day, you should call him the next day to let her know. Because the teacher may be a little busy, have no time or have too much news to see your news, I waited for him and didn't reply all day. You need his reply, and then call her to let her know.