First of all you have to discuss the details of the partnership with your friend such as:
- who pays for what expenses: building costs, land surveyor, gov application fees, land premiums, bribes for villagers who object the project, profit taxes etc etc
- who will get what % after houses have been built and approved. Since you are providing land and ding right you should aim for 50% of the revenues. Eg: 2 houses built then you should get one house. Also specify in the contract which house.
- find an independent lawyer that solely represents you.
There are so many potential problems and obstacles for village house projects. Be well prepared. I have completed a partnership myself and it gave me many grey hairs.