chèn​xū'ér​rù

to take advantage of a weakness

Senses

趁虚而入/ 趁虛而入 chèn​xū'ér​rù to take advantage of a weakness

To avail oneself of a vulnerability or gap to enter or strike, such as when an opponent is weak, distracted, or ill-prepared; literally "to enter while there is a hollow".

References

variant 趁虚而入/趁虛而入 乘虚而入/乘虛而入
variant 乘虚而入/乘虛而入 趁虚而入/趁虛而入