Is the equator evenly heated in the four solar terms?

Reason: The heat received by the surface is related to atmospheric conditions and solar altitude angle. This problem mainly considers the solar altitude angle. In spring and autumn, the sun shines directly on the equator, and the sun is high and heated. In winter and summer of solstice, the sun shines directly on the tropic of cancer. The height of the sun is very small, so it is less heated. In addition, you can also refer to the annual solar radiation to judge:

As can be seen from the figure, the monthly solar radiation in the equatorial region is different, which reflects from one side that the equatorial heating is unequal under different solar terms.