亠 (tóu) is Kangxi radical no. 8, “lid”. In this form it is written with 2 strokes.
As a radical, 亠 (tóu) is the part a dictionary files these characters under. Often it hints at the meaning - “lid” - but sometimes it is only a shape that the character happened to share.
The characters range from 3 to 9 strokes. 2 of them already appear in HSK 3.0 levels 1–2, and 1 has a full word page of its own.
Good ones to start with: 亮 (liàng) bright / light / clear, 交 (jiāo) to hand over.
← 二 (èr) · All characters · 亻 (rén) →
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