just flew the NNG-CAN route last tuesday. no cz lounge in nng but they graciously escorted me to the china unicom first class lounge. vip treatment all the way to the gate. the flight was on apron and not using a bridge and then sent a private van to take me directly to the boarding stairs. they say they have not received notification from can as to skyteam members but the local NNG staff went out of their way to give me the VIP treatment.