'纯手工' literally means 'pure hand work' — combining 纯 (chún, 'pure, entirely'), 手 (shǒu, 'hand'), and 工 (gōng, 'work, craft'). It emphasizes that an object or product was made completely by hand, with no machine involvement at any stage. This term carries strong positive connotations of authenticity, care, tradition, and craftsmanship.

You’ll often see '纯手工' used in contexts like food (e.g., noodles, dumplings), textiles (embroidery, knitting), pottery, or artisanal goods. It’s frequently employed in marketing to highlight quality and uniqueness — for example, on shop signs, product labels, or restaurant menus. While it functions grammatically as an adjective, it typically precedes nouns directly (e.g., 纯手工月饼) and is rarely used predicatively without additional phrasing (e.g., '这月饼是纯手工的' is acceptable, but '这月饼很纯手工' is unnatural).