Traditional Culture Encyclopedia - The 24 Solar Terms - What does the next sentence mean by the first spring?

What does the next sentence mean by the first spring?

The first spring refers to beginning of spring, which is the first of 24 solar terms, and the second spring refers to the vernal equinox, which is the fourth of 24 solar terms. Beginning of spring is the first of the 24 solar terms. Entering beginning of spring means that spring is coming and the temperature will get warmer. However, the answer of ant manor classroom on February 3 should be the wrong answer, and the vernal equinox should be chosen. Hope to bring help to players.