Watch the stroke order, then trace it yourself.
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Threads (纟) form a knot or button (丑) — button, knob, or bond.
Download and print worksheets to practice writing 纽

HSK words that contain this character.
Real-world example sentences demonstrating how 纽 is used in context
Friendship is the bond that connects us
New York is the largest city in the United States
The buttons on this shirt are very beautiful