Yiung Chui is Lane's cover up boyfriend while she is dating Dave Rygalski. This eventually becomes a problem as Chui begins falling in love with Lane in the process. He is dating another girl secretly, while dating Lane. He follows her like a lost puppy.
Yiung Chui was chosen by Mrs. Kim to go with Lane to her prom. He broke up with his real girlfriend and began to fall in love with Lane, although she likes Dave.