Lan Wangji smiles, a rare one, which is now becoming more often, and he clearly enjoys seeing Wei Ying learning to make breakfast.

"Scramble eggs. It needs butter and milk in the pan. I never know of this before. Back home, we tend to eat them boiled, fried, or sunny-side up."

He's going to keep his eye on the bread in the toaster, as bread gets easily burned if the dial is set at the high level.