How many months can Liaoning Bayuquan wear short sleeves?

Is it Yingkou City, Liaoning Province? Yingkou probably wears short sleeves in June.

Yingkou has a temperate monsoon climate. June to September is a hot season every year, so you can wear short sleeves from June to September.

Yingkou is a prefecture-level city under the jurisdiction of Liaoning Province and a sub-central city of Liaoning coastal economic belt. It is located in the southeast of China, the center of Liaodong Peninsula, the east coast of Bohai Sea and the mouth of Daliao River.