Conversations start with “Have you turned on your ondol yet?” and revolve around the wonders of electric blankets.
Your landlord rings your doorbell at 7:30 in the morning to show you how to turn on the boiler.
You wake up to find your jar of coconut oil used for oil pulling has solidified.
You pull out the long underwear and leg warmers.
You wear coats when you leave the house in the middle of the day.
You make predictions about the first snow. November 10th is my guess.