This was clever:
A man managed to get 300 days of free lounge access from China Eastern Airlines by buying a first class ticket on the carrier, and then changing it every day for 300 days. He would then use the ticket to get into the lounge at Xi’an Airport, where he would partake in the free food and drinks. It took nearly a year, but airline officials finally caught on. The man got his refund and all is, once again, right with the world.