Walking in the rain. Shopping or walking in the drizzle is a fashion of modern Europeans and Americans. Walking in the rain has many fitness functions that can't be compared with walking in sunny days. A drizzle falling on the earth can wash away dust and dirt and purify the air.

In addition, a large number of ions produced before sunset and at the beginning of rain enjoy the reputation of "air vitamin", which makes people feel calm and comfortable, and helps to eliminate the depression that the human body is prone to due to rainy weather.