Why is Kuqa so rich?

There are many petroleum energy sources and many industrial chains. According to the inquiry of official website, the people's government of Kuqa City and Kuqa City have built economic growth poles around the industries of energy and chemical industry, textile and clothing, modern agriculture, building materials metallurgy and so on, and strived to become the national petrochemical industrial base and the textile and clothing industrial base of the autonomous region. Kuqa is a county-level city under the jurisdiction of Aksu region in Xinjiang Uygur Autonomous Region, located in the middle of the southern foot of Tianshan Mountain and the northern edge of Tarim Basin.