Hainan Airlines' board has recently approved the investment of yuan (CNY) 1.68 billion ($274 million) in Tianjin Airlines.
After this capital infusion, Tianjin Airlines will have registered capital of CNY5.6 billion, with Hainan Airlines holding 30.7% of the carrier.
At the same meeting, the airline board approved the injection of HK$385 million into Hong Kong International Aviation Leasing, a subsidiary of the HNA Group.
The carrier also approved plans for its wholly owned subsidiary Hainan Airlines Investment Holding to inject HK$776 million into HKA Group Holdings. HKA Group is the parent of Hong Kong Airlines and Hong Kong Express.
It will also be issuing CNY400 million of medium-term notes with expected interest of 5-6%, and CNY400 million of short-term notes with a 1% expected interest, says the Chinese airline.