Hainan Airline steward here, for those wondering about the financial situation we indeed went trhough some hard time recently; us cabin crew saw our salary delayed for a few months.
But as someone said in this post, HNA seems to big to fail, government recently injected some money in our company. This support from the party could make HNA a safer bet i guess.
On a side note, Pilots working here are pretty satisfied with the salary and commuting options. We fly A330 B737 B787 and HNA will be acquiring more A350 so pilots with this QT might be interested.