Start of Summer，The seventh solar term in the Chinese lunar calendar, usually beginning between ‌May 4 and 6‌ on the Gregorian calendar. The character "立" (lì) signifies ‌"commencement"‌ and implies an ‌"upright posture"‌, indicating that crops sown in spring have now ‌grown tall enough to stand erect‌, marking the official onset of summer.