The couple behind Bike Asia, Scott and Snowy, have been running cycling tours in China and elsewhere for a long time. And they're really good at it, which is why I've been on tours with them in China (Guangxi, Hainan, Yunnan, Guizhou, Ningxia, Heilongjiang/Inner Mongolia) and Sri Lanka. Their approach is to have fun, be flexible, and bike to the best of your ability. These are not hard-core biking tours, banging away on eight-hour days to rack up distance, but, rather, hybrid tours that combine biking with other forms of relaxation (sightseeing, nice meals, and an occasional swim). Scott and Snowy strike the right balance between professional and relaxed, and remain calm in the face of adversity. The quality of the bikes and accomodation has been solid, and the cost of the tours has been reasonable. They can provide detailed descriptions of the individual tours.