How to match clothes when visiting four European countries in mid-April?

In mid-April, the weather is fine. Bloom is warm in spring, and the temperature in Europe is the same as ours. When you play ball, you can wear a T-shirt inside, a coat outside, brand sportswear and Nike. Below are jeans, or casual pants and sneakers, full of youthful vitality and leisure freedom. Wear as little clothes as possible, and wear a sweater with thin sleeves. Dress casually, not too formally. You'll know when we get to Europe, because that's how we dressed when we went. We went in June+10, 5438, and wore sweaters or something while playing. When Europeans are still wearing short sleeves, hahaha, bring UnionPay cards. We bring a dual-currency card, which is convenient and safe to swipe when shopping. Very cost-effective. You can take it out to eat on the bus at any time, because European food is so bad that you can only eat it well when you are full. You can take a small bag of mustard tuber and the like out to eat when you eat, and sometimes you can eat whatever you don't like. . . .