TSUMUGU · TOCFL B2 (est.) · 字
圈
圈 ＝ 囗 ＋ 卷
ㄑㄩㄢ · quān/juàn
noun (quān) — a circle, ring; (juàn) a pen, enclosure
字源 FORM — what the parts do
囗義an enclosure, a wall around
ITjuǎn → quān — the donor's j- went to q-, tone shifts to level
A wall around (囗) and 卷, which is curling and rolling. The fence runs round in a curve — first the livestock pen (juàn) — 豬圈、牛圈, then any ring drawn closed (quān) — 圓圈、圈子, and the set of people inside one — 圈內、社交圈.
故事 STORY — a scene to remember it by
牆（囗）繞成一圈（卷），把牲口圍在裡頭。
A wall (囗) curves round in a ring (卷), fencing the animals inside.
字源記憶法
意 · Meanings
quān
(本義)圓圈、圈子— a circle, ring常用
→圈內、社交圈— a circle of people, a set
juàn
(引申)豬圈、牛圈— a pen, enclosure for livestock
(本義) original meaning · → ⇒ each arrow = one more step of extension