the month of June

(idiom) midsummer frost or snow, used to describe a gross miscarriage of justice or a serious injustice; refers to the story of the advisor Zou Yan whose wrongful imprisonment caused heaven to send frost during the summer heat

the hottest period of the year during the fifth and sixth months of the lunar calendar; sweltering summer heat

sweltering heat of midsummer during the fifth and sixth lunar months

China aster (Callistephus chinensis), an annual flowering plant native to China and Korea

Snow that falls in the middle of summer, specifically during the sixth month of the lunar calendar; traditionally used to symbolize a grave miscarriage of justice.