When the sun sets, there is no sunshine. It will slowly swing back and forth, rather than the rumor that there is a "sudden return" situation. When there is no light, the auxin in its body will be rearranged, and the distribution will be relatively uniform, so that it can slowly return to its starting position. At about 3 o'clock in the morning, it has turned back to its original position, and will face east, waiting for the rising of the sun, for a new day with the sun.
From the moment its bud grows to the moment it blooms, it will face the sun in order to absorb the sun's nutrients. The auxin on the back of it will rise, stimulating the cells on the back of the light to slowly elongate, so that they will rotate with the sunlight. But when the flower plate is in full bloom, it will no longer rotate with the sunlight, but it will be fixed to the east to get nutrients.
