Gōngjiàng huā le shù yuè jīngxīn diāozhuó zhè kuài yùshí.
The craftsman spent months carefully carving this piece of jade.
Tips
usage
雕琢 can be neutral (careful crafting) or negative (overly fussy, lacking naturalness). Context determines the connotation. In literary criticism it often implies that writing is too decorated and loses authenticity.
