劍走偏鋒 [剑－－锋]

Jyutping gim3 zau2 pin1 fung1
Pinyin jiàn zǒu piān fēng

Definitions (CC-CEDICT)
  1. Jian Zoupianfeng, pseudonym of prolific modern novelist
  2. the sword moves with side stroke (modern idiom)
  3. fig. unexpected winning move
  4. unconventional gambit
Definitions (Wiktionary)
  1. phrase, idiomatic
    to use a sword with fast, flexible and unexpected movements
  2. phrase, figuratively, idiomatic
    to break the normal procedure and find a new or different solution in order to be unexpected and novelty