Taivo A Taiwan Mandarin dictionary

鑿空

záokōng

ㄗㄠˊ ㄎㄨㄥ

Simplified 凿空

  1. 1to open an aperture
  2. 2(extended meaning) to cut a way through
  3. 3to open up a road

Keep 鑿空 and it comes back until you know it.

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