乘虚而入

Traditional form:

乘虛而入

Pinyin (reading):

chéngxū'érrù

Definitions:

• to enter by exploiting a weak spot (idiom); to take advantage of a lapse

Characters:

• 乘 - ride, mount; to make use of; to ascend; to multiply
• 虚 - false; worthless, hollow, empty; vain
• 而 - and, and then, and yet; but
• 入 - to enter, to come in; to join

Traditional characters:

• 乘 - ride, mount; to make use of; to ascend; to multiply
• 虛 - false; worthless, hollow, empty; vain
• 而 - and, and then, and yet; but
• 入 - to enter, to come in; to join