S un Guangxin is a self-made Chinese billionaire who is the founder and chairman of the Guanghui Group, a massive and diversified private conglomerate based in the western region of Xinjiang. A former officer in the People's Liberation Army, he founded his company in the late 1980s, initially as a restaurant and entertainment business. He has since built it into a major industrial powerhouse with core interests in energy, real estate, and automotive services.

Guanghui Group is a major player in the energy sector in Xinjiang, with significant interests in liquefied natural gas (LNG) distribution and coal mining. The company is also a major real estate developer in the region and one of the largest passenger car dealership networks in China. Sun's success is closely tied to the economic development of the resource-rich but politically sensitive Xinjiang region. He is considered the wealthiest person in the region and is a powerful and influential figure in the Chinese business landscape.