How to judge abcd solar terms

(1) The revolution direction of the earth is from west to east.

(2) When the earth revolves to A, the sun shines directly on the tropic of Capricorn, which is the winter solstice in the northern hemisphere; When the earth revolves to point B, the sun shines directly at the equator, which is the vernal equinox in the northern hemisphere; When the earth revolves to point c, the sun shines directly on the tropic of cancer, which is the summer solstice in the northern hemisphere; When the earth revolves to D, the sun shines directly at the equator, which is the autumn equinox in the northern hemisphere.

So the answer is: (1)

(2) Solstice in winter; Vernal equinox; Summer solstice; Autumn Equinox