Normal food costs about 200 pounds, and then shopping for a month costs at least 100 pounds.
On average, 700 Jin, including all food and drink, is absolutely enough.
A month's savings is about 500 pounds.
In other words, if you save again, you will only save about 2000 yuan a month and only 2 w yuan a year.
2 W, so you don't have to save yourself. It is better to study hard, keep fit, combine work and rest, get good grades and learn some real skills.