Taivo A Taiwan Mandarin dictionary

私行

sīxíng

ㄙ ㄒㄧㄥˊ

  1. 1to travel on private business
  2. 2to act without official approval
  3. 3to inspect incognito
  4. 4to act in one's own interest

Keep 私行 and it comes back until you know it.

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