Professor Zheng just couldn't figure it out.
First of all, it's only mid-month, how could the food tickets be all used up? He was busy asking questions, and it turns out, did his grandson get food so generously?
Ah, kids, they really can't be relied on.
But it's not Little Xuan's fault either; it was his own fault for not explaining clearly beforehand. Better pay more attention next time.
Professor Zheng felt he had already reflected on himself, his character had been elevated, so he decided to leave it at that.
But secondly, just before the infrared detector was done, and during one meal time, there's no more food tickets...
How distressing!
A single food ticket defeated a hero. Professor Zheng pondered over and over, looked at Little Xuan's expression, and finally didn't dare to suggest treating someone to a meal.
Ah, with what's left, I'll have to figure it out myself!
Professor Zheng returned to the office reluctantly.
