Correct

乘隙

/ chéngxì /

Strokes

Definition

to seize an opportunity/to exploit (a loophole)

Example

As a Verb

take advantage of a loophole/crack/unguarded sector; turn sb's mistake to one's own account; exploit sb's blunders/errors/mistakes

1

Chéngdí

乘敌

zhī

之

xì

隙

exploit the enemy's blunder

2

Chéngxì

乘隙

tūwéi

突围

seize the chance to break through the siege

3

Chéngxìérrù

乘隙而入

take advantage of the error and enter; seize the opportunity to step in