Lesson 11 · Foundational Components

Hand, Heart: 手 / 心

手 and 心 are two of the most productive semantic components in the entire script. 手 sits inside most characters about physical action — hitting, holding, pulling, throwing. 心 sits inside most characters about emotion and mental states — thinking, worrying, loving, wanting. Both contract into a narrower left-side form when they combine with other pieces, so learning to recognise the contracted shape matters as much as the full character.

Your two new components

手
扌 (left side)
shǒu
hand
4 strokes
心
忄 (left side)
xīn
heart, mind
4 strokes

Quick recall — click each card to flip it:

手 / 扌
shǒu — hand
心 / 忄
xīn — heart, mind
手 is a pictograph of a hand. Wiktionary describes the top stroke as a bent middle finger, with the horizontal strokes below representing the remaining fingers. 手 has kept five fingers throughout its history, unlike older hand-shaped pieces such as 又 (yòu, "right hand" originally; "again, also" today) or 爪 (zhǎo, "claw, talon"), which usually show three. (Wiktionary: 手)
心 is a pictograph of a heart. The three strokes around the base represent the organ's chambers, stylised into dots around a curved outline. Historically it stood for the heart as the seat of thought as well as feeling — which is why 心-based characters cover both emotion and cognition, not just emotion alone. (Wiktionary: 心)
手 and 心 both change shape on the left side of a character. This is the same pattern flagged for 人→亻 and 水→氵 in Lesson 1, 金→钅 in Lesson 10: 手 becomes 扌 (as in 打 and 找), and 心 becomes 忄 (as in 忙 and 快). Same meaning, same component, a different shape reserved for the left-side position.
忄 looks like a narrow 小. It isn't related. Lesson 3's 小 is a dot, a hook, and a dot arranged around a centre line — and 忄, at a glance, is built from a similar-looking set of strokes. But the two have separate origins: 小 diagrams "small" abstractly, while 忄 is heart's contracted shape.

Stroke order

心 — 4 strokes

Stroke order diagram for 心, 4 strokes
心 — 4 strokes
▶ watch animated

手 — 4 strokes

Stroke order diagram for 手, 4 strokes
手 — 4 strokes
▶ watch animated

Examples using these components

打 pairs 扌 with a phonetic partner, the same pattern as 钱 in Lesson 10:

打dǎto hit, to strike

扌+丁=打

Also a general-purpose verb attached to many nouns to make a phrase, as in 打电话 (dǎ diànhuà, "to make a phone call") or 打篮球 (dǎ lánqiú, "to play basketball"). 扌 is the semantic element; 丁 (dīng, "nail" — also "robust male adult" and one of the ten Heavenly Stems) is phonetic only, named for accuracy and not entering the component pool. (Wiktionary: 打)

快 pairs 忄 the same way:

快kuàifast, quick; also pleased, happy

忄+夬=快

忄 is the semantic element — speed and pleasure both routed through "heart" as the seat of response. 夬 (guài, "resolute; to part, to fork" — originally a pictograph of a hand wearing an archer's thumb ring) is phonetic here, not semantic; kuài and guài are close enough that the sound link is still audible today, the same situation as 戋/钱 in Lesson 10. 夬 is named for accuracy and isn't entering the component pool. (Wiktionary: 快)

忙 (máng, "busy," 忄+亡) follows the same pattern and is worth knowing on sight even without a full breakdown — it's one of the first words in almost any small-talk exchange, as in 帮忙 (bāngmáng, "to help, to do a favor").

Check your recall

Which component is a pictograph of a hand?

心 becomes which shape on the left side of a character, as in 忙 and 快?

In 打 (扌+丁), 丁 functions as:

快 (忄+夬) means:

Go further

Etymology sources for every character above are linked inline. For the rigorous version of any of them, see the Outlier Dictionary of Chinese Characters.

Out in the world: 打折 (dǎzhé, "to give a discount") is posted in the window of nearly every shop having a sale; 快餐 (kuàicān, "fast food") labels quick-service restaurants everywhere. Both use today's components in words you'll now be able to partly read even before you've been taught 折 or 餐.