The weather at 20 is not the real summer temperature, and it is a little cold in the morning and evening, because it is most practical to wear a coat when going out at this time, and you can add or subtract it freely. Young people can't hold back for a long time and will wear fresher clothes. Dressing will be messy at this time, and everyone wears different clothes.
People who are afraid of heat have a weather of about 20 degrees, which is generally cooler in the morning and evening. If people who are afraid of heat wear short sleeves inside. Just wear a thin coat outside, and the pants are just the thickness of a pair of jeans. Some people are very afraid of the heat and often don't take their coats. I suggest you accept it.
People who are not afraid of cold and heat can wear a long sleeve inside and a thin coat outside. Or some thin cardigans. Sweaters and vests are the best. They are easy to put on and take off.
Clothes worn at different temperatures:
The weather around 14~ 15℃:
Hat: wool hat or without gloves: cotton gloves, leather gloves or without scarves: silk scarf coat: thin coat, sweater, sweater, denim shirt base: shirt, long-sleeved T-shirt, short-sleeved T-shirt, thin sweater.
Pants: jeans, casual pants, shoes: leather shoes, sports shoes and boots.
The weather around 16~ 17℃:
Hat: pullover knitted hat, baseball cap or no coat: thin coat, sports coat, windbreaker, cardigan sweater base: short sleeves, shirts, sweaters, long-sleeved T-shirts, thin sweaters.
Pants: jeans, casual pants, skirts (plus warm pants) Shoes: casual shoes, leather shoes, sports shoes, single shoes, socks: thin socks, socks.
The weather around 18~ 19℃:
Hat: pullover knitted hat, baseball cap or without gloves: no coat: thin coat, sports coat, windbreaker, cardigan sweater: short sleeve, vest, short sleeve shirt, sweater, long sleeve T-shirt.
Pants: jeans, casual pants, skirts (plus warm pants) Shoes: casual shoes, leather shoes, sports shoes, single shoes, socks: thin socks, socks.