I beg you for a 400-word idea for the Universiade. Please write down what it was like and what would happen if it were used. Don’t 1. 2.. No, I want a composition

Walking around, trying to find fun in some ordinary trivial matters. ?

There are many plants planted in my yard, which often attract various small insects. I often plant some for research. Suddenly, I discovered that on a green leaf, a white spot was slowly moving towards the head of the leaf. Out of curiosity, I took out a magnifying glass and looked at it. It turned out to be an aphid, which slowly crawled to the center of the leaf and greedily sucked the leaf juice. At this time, a little ant walked towards the aphid. I thought: Does the little ant want to eat the aphid? I saw the ant walking behind the aphid, patting the aphid's butt, and the aphid expelled a drop of water, and the ant ate it. After a while, a few more ants crawled over. They patted the aphid's butt, and the aphid obediently expelled some water droplets. The ants started to eat again, and the "clean" was wiped out at once. ?

At this moment, a seven-spotted ladybug flew over and landed on the leaf. The ants touched each other's tentacles, as if discussing strategies. After a while, the ants attacked the ladybug, biting it from time to time. The seven-spotted ladybug was bitten and bruised all over its body. He had no choice but to flap his wings, look at the prey that had reached his mouth, and fly away helplessly. Huh? Why do ants eat the "water drops" excreted by aphids? Why do ants help aphids drive away ladybugs? ?

With these puzzling questions, I read the relevant information and realized that it turns out that aphids excrete aphid nectar, which is very sweet, ants love to eat it, and aphids happen to be The natural enemies of the seven-spotted ladybug, ants, in order to protect the honey source, help the aphids drive away the seven-spotted ladybug. ?

Ah! This afternoon was truly unforgettable. Through careful observation and thinking, the secret was finally revealed to me.