“HNA Group Co. is marketing commercial properties in New York, Chicago, San Francisco and Minneapolis valued at a total of $4 billion as the indebted Chinese conglomerate seeks to stave off a liquidity crunch. Among the properties on the block is 245 Park Ave…… HNA bought that skyscraper less than a year ago for $2.21 billion, one of the highest prices ever paid for a New York office building. The company also is looking to sell 850 Third Ave. in Manhattan and 123 Mission St. in San Francisco…”