二 (èr) is Kangxi radical no. 7, “two”. In this form it is written with 2 strokes.
As a radical, 二 (èr) is the part a dictionary files these characters under. Often it hints at the meaning - “two” - but sometimes it is only a shape that the character happened to share.
The characters range from 2 to 8 strokes. 3 of them already appear in HSK 3.0 levels 1–2, and 4 have a full word page of their own.
Good ones to start with: 二 (èr) two, 五 (wǔ) five, 些 (xiē) some / a few, 于 (yú) (of time or place) in.
← 亅 (jué) · All characters · 亠 (tóu) →
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