神工鬼斧

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

Character by character

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