The restaurant wasn't meant to run for 24hours. Once it was 12am, the whole family left for home. But most times, Jianjun stayed back in the kitchen practicing.
His parents loved each other dearly but they were each other's kitchen rival. They always wanted to out do the other to show who the boss was. And a better way to show that was in the ability and performance of their apparentice to adapt and perform well within a specific period before a contest would be held against both sides to determine who the best chef and coach was. Mr Kang or Mrs Kang?
Jianjun's partner was obviously Changyu since she was also his mother's apprentice just like he was.
He knew she liked the kitchen to an extent and didn't want her to stress herself too much when it was time for the contest. So he had to properly learn everything for the both of them. And when she had the time, he would put her through thoroughly.