Personally, the contract has come into effect as long as it does not violate the relevant provisions of the law. But the problem is, you can ask the other party to show the detailed details and uses of the promotion fee of 1000 yuan, and issue relevant invoices.
1, if it is not promoted, it can be returned naturally.
2. At least there are no legal hidden dangers.
3. miscellaneous money? Strictly follow the contract, there should be no possibility of corruption unless you need to modify or establish another contract.