I’m sitting in the gift shop of a large park covered in snow sculptures with a not-yet-two-year-old scream-crying. We’re in Harbin, China, and it’s -11 degrees Fahrenheit outside; numbers so extreme they meant nothing to me when packing. I grew up in southeast Texas, where winter means putting on a light jacket. I lived in Bangkok, where winter doesn’t exist. And I lived in Germany, where winter was manageable with the right jacket and thick wal…