I want to rent a house, pack the landlord's house and rent it out to make the difference. I come from Hefei, but I just don't know how to find a house.

If there is no contract, it is rented out, but if someone reports you, you will suffer. Now the law does not allow such division of houses, which is a potential safety hazard. You'd better find your own house and be the second landlord. Don't change the apartment. Generally, renting a house at the end of the year is released at the beginning of the year, so there is a difference between tight and not tight housing.