Spring Airlines, founding in 2005 by Spring Tour, is a low cost airlines that flies over 160 routes across China and Asia to locations like Guangzhou, Shenzhen, Sanya, Guilin, Hong Kong, Macau, Taipei, Bangkok, Singapore, Tokyo, Seoul, Siem Reap and so on. Think Ryanair or EasyJet in Europe; low base cost, with additional fees for stuff like luggage. Food must also be paid for inflight, cash only, though the prices are reasonable and the quality's pretty good.