Please write an appropriate famous saying and aphorism (or an ancient poem) for each of the following places.

reading room: black hair doesn't know how to study early, while white head regrets studying late.

teacher (classroom, right? ): There is a lot of diligence in Shushan, and there is no limit to learning the sea.

restaurant: who knows that every grain of Chinese food is bitter?

Playground: Diligence makes up for the shortcomings, which is good training, and one point of hard work makes one point of talent.

Shop: A few glasses of wine will add color and welcome guests with a smile.

I wonder if you are satisfied?