THE ascent of HNA, an aviation-to-financing giant, began on six wings and a prayer. It started out as Hainan Airlines, set up on China’s southern palm-fringed island in 1993 with three planes, in a joint venture between a Buddhist businessman, Chen Feng, and the local government of Hainan. In 2000 the firm became HNA Group and, from a Buddha-shaped headquarters, Mr Chen built his enterprise into an empire with more than $150bn in assets.