Facebook help with Chinese character formatting

I was trying to broadcast a message through Facebook, and found that I could not underline and bold some of the headings, which I feel is important for layout that could be understood easily. Can you help with this? Note that the usual way to work with underline and bold type of English characters may not work with Chinese characters, so you may need to try it out first. It can be finished in an hour or so. If you think you can do this, let me know.