entries → 在
TSUMUGU · TOCFL 1 (est.) · 字
character · TOCFL 1 (est.)
在 =
ㄗㄞˋ · zài
verb — to exist, to be at; adv — in the middle of

字源 FORM — what the parts do

cái — gives the sounda sprout just breaking ground; oracle bone wrote the word with 才 alone
{z,c,s}ITcái → zài — crosses inside {z,c,s}; tone shifts too
earth
Earth (土) anchors the meaning; 才 cái gives the sound, c crossed to z — itself a sprout breaking ground. What has broken ground is there: 存在; where it is: 在家、在台北; what it is in the middle of: 在吃飯.

故事 STORY — a scene to remember it by

前天還平平的,今天)裡頂出一點綠()。
Flat ground two days ago; today a point of green (才) pushes up through the soil (土).
字源記憶法
意 · Meanings
(本義)存在— to exist, be there常用
在家、在學校— to be at, in常用
正在— in the middle of — the progressive 在
(本義) original meaning · → ⇒ each arrow = one more step of extension