[Suppafly]

>The standard Chinese characters for 1, 2, and 3 (一, 二, 三) are among the simplest characters in Chinese: literally just one, two and three horizontal strokes.

Does that work for larger numbers, keep adding strokes?

[GuB-42]

No, 4 is 四. Numbers are simple characters, but only 1,2,3 are made by adding strokes.