What is the relationship between mushroom head and rice noodles in reality?

In the short video, mushroom heads and rice noodles play husband and wife, but in real life, rice noodles have no object. Sean's mushroom head and rice noodles are not husband and wife at 6: 30, but friends.

Rice noodles, whose real name is Siqi. His acting is very good. In short videos, he often plays his sister's daughter and his wife. Mushroom head's real name is Huang Xiaofei.