1. Rights protection: If the developer breaches the contract, he can protect his rights and interests through legal channels, including demanding the return of the purchase price and asking the developer to bear the liquidated damages.

2. Transfer: If you don't want to continue holding this unfinished building of Xi 'an Evergrande, you can consider transferring it to other people or investment companies. However, it should be noted that if there are disputes or legal risks in the property rights of this unfinished building, it will affect the price and speed of transfer.

3. Give up: Evergrande's unfinished building in Xi 'an is irretrievable, so we can consider giving up this investment. However, it should be noted that if a certain amount of purchase money has been paid, it is necessary to negotiate a refund with the developer in time.