How do northerners avoid long red envelopes when they spend summer in the south?
The most uncomfortable thing for northerners in the south is the hot and humid weather, but when in Rome, do as the Romans do. I recommend several magic weapons for southerners to dispel summer heat and dampness: drink more herbal tea, drink more sugar water, cook more old fire soup, and eat more fruits to supplement vitamins and minerals. Of course, exercise is essential, so that wet poison will not invade.