(interjection expressing surprise, grief etc) / variant of 嘻[xi1]
嘻
=
口
+
喜
:
Marie Curie (xi) brought a mandarin (口) for the wedding banquet (喜) in front of the space station (Ø1) and laughs happily (嘻) as she adds the mandarin to the buffet. Later that day she will perform a hip-hop (嘻哈) performance for the groom and the bride.