鬼斧神工

1. • supernaturally fine craft (idiom) the work of the Gods
2. • uncanny workmanship
3. • superlative craftsmanship

Character by character

• 鬼(guǐ)disembodied spirit
• 斧(fǔ)hatchet
• 神(shén)God
• 工(gōng)work