天衣无缝

tiān yī wú fèng

flawless; seamless

Character by character

天tiān
heaven

衣yī
clothes

无wú
no

缝fèng
seam

两个人配合得天衣无缝。

The two of them worked together seamlessly.

Tone: positive (praise).

缝 is fèng (a seam), not féng (to sew). Fairies' clothes have no seams. Also of lies: 谎话编得天衣无缝.

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