They are two cartoon characters written by Andy Lau, named Andox and Heizai respectively. The white one is called Andox, and the black one is called Black Boy.

Andox and Heizai are two "sons" of Andy Lau. Their names are Andy Lau's mother. Andox was inspired by Andy Lau when he planned his album The Fantasy World of Cattle. He spent the whole day in the location of Gansu where the movie "See the Dragon and Dismantle the Dragon" was filmed. Andy Lau said that he experienced the feeling of being a mother.

At the same time, my son Andox is also the best Mother's Day gift for himself. Later, in order to make Andox not lonely, she gave birth to a black boy.