China SSS, commonly known as Shenzhen Airlines or colloquially referenced under the IATA code 9C which actually belongs to Spring Airlines, requires clarification: IATA code 9C is assigned to Spring Airlines, a Chinese low-cost carrier headquartered in Shanghai. Spring Airlines was founded in 2004 and operates as one of China's leading budget airlines, offering domestic and select international routes. Spring Airlines focuses on providing low-fare air travel across China and to destinations in East and Southeast Asia, operating a single aircraft type fleet for operational efficiency. The airline is known for its no-frills service model, high seat density configurations, and ancillary revenue strategies typical of low-cost carriers. The airline is publicly listed and has grown significantly since its founding, becoming a major player in China's rapidly expanding aviation market. It competes with state-owned carriers by targeting cost-conscious travelers.