Generally, there is an agreement on when to pay, how to pay, whether to punch in or send it over, or if he comes to pick it up and doesn't pay within a certain period of time, it is a breach of contract and constitutes a breach of contract. See how your breach of contract is agreed, can he cancel the contract and demand compensation for liquidated damages, or something else?

Whether the house can be subletted depends on the contract. If the contract says that subletting can only be done with the consent of the landlord, it must be in accordance with the contract.

The last question is about your decoration. If the landlord agrees to your renovation, if he does not breach the contract, according to the judicial interpretation of the Supreme Court last year, you ask for compensation for renovation, and the court will not support it. If you negotiate with the landlord, it is ok to let him transfer to another hospital or rent it out. The premise is also agreed, whether the relationship between you has really gone bad.

Small business is difficult to do, mainly because of a sense of law.

I can guarantee that my answer is the most standard.