(August 4 th, 20? The ancients in China divided a year into 24 equal parts according to the natural phenomena such as the running position of the sun and the moon, the weather and the growth of animal

(August 4 th, 20? The ancients in China divided a year into 24 equal parts according to the natural phenomena such as the running position of the sun and the moon, the weather and the growth of animals and plants. The latitude of the tangent point is between 66 ha' and A0. According to the relationship between the latitude of the tangent point and the latitude of the direct solar point (they are complementary), it can be known that when the latitude of the tangent point is 66 ha' ′, the direct solar tropic of cancer is in summer solstice or winter solstice. When the tangent latitude is A0, the sun shines directly on the equator, and the solar terms are vernal equinox or autumnal equinox. Therefore, we can determine the solar terms represented by the number ③ in the figure: the tangent latitude is 66 ha'', and the solar terms should be summer solstice or winter solstice.

When the solar term represented by the number ③ is the summer solstice, the tangent latitude A0 on the left is the vernal equinox and the tangent latitude A0 on the right is the autumnal equinox. Looking at the map is determined according to the relative position of other numbers and the known solar terms: ① severe cold, ② long summer and ④ heavy snow.

When the solar term represented by the number ③ is the winter solstice, the left tangent latitude A0 is the autumnal equinox and the right tangent latitude A0 is the vernal equinox. Look at the map according to the relative positions of other figures and known solar terms: ① midsummer, ② beginning of winter and ④ mango.

Therefore, choose: d.