Today I found in Options tab. I can set languages/local to Chinese. So I set it. However, when I input Chinese when creating a new post, all the Chinese characters turned to ? in the body after I clicked “post”. But the Chinese character is shown correctly in the title field.

hmm, I am not sure whether it is recommended to use Chinese when I am posting. Supposely I feel many viewers may not recognize it since it is an English web site. <G>