The temperature difference between Guiyang and Bangkok is over 30 degrees. Wear ski clothes before boarding the plane, but what should I do when I get to Bangkok? I want to wear less, but I'm worried about the cold on the plane. Wear this summer dress and shorts with velvet pantyhose inside. Coat and down jacket are outside. When you get on the plane, you can take off your down jacket that feels hot. If the air conditioner of the plane is low, the down jacket can also be covered. When you arrive at Bangkok airport (indoor air conditioning in Thailand is generally on to 16 degrees), go to the toilet, take off your pantyhose and put away your down jacket. When you leave Bangkok airport, you will feel hot.