Is it appropriate for beginning of autumn to give his girlfriend a red envelope?

Nowadays, young people, especially couples, are more popular in giving red envelopes during festivals. In early autumn, "the first cup of milk tea in autumn" is usually sent. Early autumn is the right time to send a red envelope to your girlfriend.

Beginning of autumn is the thirteenth of the twenty-four solar terms, and it is the beginning of autumn. In the southwest, the sun reaches 135 degrees along the yellow meridian, which is celebrated on August 7 or 8 of the Gregorian calendar every year. "Chestnut" means the beginning, and "autumn" means the maturity of grain. The change of the whole nature is a step-by-step process, and beginning of autumn is a turning point in which the Yang gradually closes, the Yin gradually grows, and the Yang gradually gets cloudy.