What is a spring dish? Why do you eat at the vernal equinox?

Spring vegetables are a kind of lettuce. Because this dish is ripe at the vernal equinox, it is just edible.

Spring vegetable is a kind of vegetable belonging to the genus Lettuce, which has the most leaves, short stems and is covered with leaves. Spring vegetables that grow into balls are also called head lettuce and head lettuce. Many nicknames of lettuce, such as spring vegetables, thousand-legged vegetables, stem lettuce, lettuce and fragrant horse shoots, are common names for different parts of lettuce.

The vernal equinox refers to one of the 24 solar terms, that is, when the sun is located at 0 degrees of the yellow meridian (vernal equinox). Gregorian calendar March 20th or March 2nd1day. At the vernal equinox, the direct point of the sun is on the equator, and then the direct point of the sun continues to move northward, so the vernal equinox is also called the "ascending equinox". In ancient times, it was also called "Japan-China", "Day and Night" and "Mid-spring Moon". The vernal equinox is an important solar term, which not only has astronomical significance: the northern and southern hemispheres are equally divided day and night, but also has obvious characteristics in climate.