这是汉字“耑”（端），“耑”和“端”是古今字。它的甲骨文和金文，上面多么像是刚刚长出的嫩芽，而下面多么像是小草或大树的树根呀。
根破土而出，所以有发端的意思。上为新芽下为深根，所以有两端的意思。又由根引申为根由、缘由的意思。比如“旧来偏得君王意，今是无端宠爱轻。”意思就是说以前得到君王的偏爱，如今却没有缘由被君王嫌弃，不再宠爱了。
This is the Chinese character "耑" (duān), and "耑" and "端" are ancient and modern forms of the same character. In its oracle bone inscriptions and bronze inscriptions, the upper part looks so much like a newly - sprouted bud, and the lower part looks so much like the root of a small grass or a big tree. The root breaks through the soil, so it has the meaning of "beginning". The upper part is a new bud and the lower part is a deep root, so it also has the meaning of "two ends". Moreover, it is extended from "root" to mean "reason" or "cause". For example, in the verse "旧来偏得君王意，今是无端宠爱轻。", it means that in the past, one was favored by the king, but now, without any cause, one is disliked by the king and no longer favored.