Maybe the more internet connected know about this, but I’ve just been introduced to a bit of Chinese internet culture… the use of a Chinese character as an emoticon:
Do you see the face in the character?
The character for “Jiong” is nowadays more widely used on the Internet as an ideographic emoticon representing a range of moods, as it resembles a person’s face. It is commonly used to express ideas or feelings such as annoyance, shock, embarrassment, awkwardness, scorn.
a bit more via Wikipedia