entries → 孫
TSUMUGU · TOCFL 2 (est.) · 字
孫 character · TOCFL 2 (est.)
孫 ＝ 子 ＋ 系
ㄙㄨㄣ · sūn
noun — grandchild; descendant

字源 FORM — what the parts do

子義a child
系義a thread that ties on, continues — also carries the sounda hand 爪 holding silk 糸
A child (子) tied on by a thread (系) — the son's son, the line continued. 系 does double duty: it means the continuing thread and it lends the sound. From the grandchild: 孫子, then any descendant, 子孫.

故事 STORY — a scene to remember it by

一個孩子（子）的後面拴著一條絲線（系），往下續——這是孫。
A child (子) with a silk thread (系) tied on behind, running downward — the grandchild.
字源記憶法
意 · Meanings
(本義)孫子、孫女— grandchild常用
→子孫、後孫— descendants常用
(本義) original meaning · → ⇒ each arrow = one more step of extension
關 · Related
子zǐthe left half standing alone — 子 is the child; add the thread 系 and the line runs on to the grandchild係＝ 亻 ＋ 系xìshares the thread 系 — 係 ties it to a person 亻 instead of a child 子