My suggestions are as follows:

7 yuan for daily living expenses is used for daily necessities such as meals.

Deposit in lump sum, with a monthly deposit of 1,5 yuan, with a term of one year, and all of them will be transferred to one-year time deposits or treasury bonds after maturity. Deposits and treasury bonds are risk-free and can be used as living reserve funds or down payment for future house purchases.

The fund is fixed investment, and 1 yuan every month, and the fund is risky. Young people can bear some risks. They can enjoy the fruits of economic development by spending 1 yuan as an investment every month.

The rest of 3 yuan is put into a current account and temporarily accumulated as an unexpected expense in daily life, such as buying clothes, furniture, cosmetics, and respecting their parents, as a way to improve their personal quality of life.

If you don't manage your finances, it is a happy thing and a good thing to arrange your life as soon as possible.