A century-old plan means a plan or measure related to long-term interests.
A food-hungry male worm realized that eating more would not mean eating until he was full at every meal, but that he would eat more if he lived longer.
In order to eat more food, Wen Ke decided to exercise more every day
It's just that the beautiful, strong and miserable person in the book, can you please stay away from me?
Purpose: good health