What does the waning moon on the yellow calendar mean?

Hello. Canyue: The last quarter moon. The moon or moon phase at the end of the lunar calendar. Meniscus in the morning: a broken and round meniscus. The waning moon: Unlike the "new moon" at the beginning of the month, the waning moon at the end of the lunar calendar marks the end of the lunar calendar. At this time, the moon is not far from the west of the sun, and only a small part of the circular surface is bright. The waning moon and the first quarter moon appear in the eastern sky after dawn and midnight respectively, and their "faces" all face east, that is, the eastern half is bright. The waning moon is like a hook, which is the most vivid description and metaphor of the waning moon. Tang Bai Juyi's "A Guest in the Moon" has: "Dawn follows the waning moon, and evening follows the new moon."