The Contract Law stipulates that if the lease item endangers the safety or health of the lessee, the lessee may terminate the contract at any time.

If the housing quality problem really threatens the safety or health of the lessee, the lessor breaches the contract. Not only will they refund the deposit, but you can also claim compensation. However, if the housing quality problem does not reach that level, and you noticed this defect when signing the lease contract, then you can't ask to return a house.

Besides, it's extravagant for you to rent 10,000 houses in Weihai every year ... Last year, I went to 200 yuan/month near Harbin Institute of Technology (Weihai).