There is a small water table here, from the recent floods,but farming will be difficult. The old Lop Nur salt lake will provide an addition to the lean antelope meat you can supply your hungry people.
Gobi Bears wander the outcrops where new Iron and Copper deposits have formed, which should help fund your new city.
You will have to import a lot of the wood here, as the salt has curbed the growth of most vegetation.
Also, be on your guard for nomadic tribes from the harsh desert regions, as they may also wish to take advantage of the mineral deposits here.