攻关

Traditional form:

攻關

Pinyin (reading):

gōngguān

Definitions:

• to storm a strategic pass
• fig. to tackle a key problem

Characters:

• 攻 - to accuse; to assault; to criticize
• 关 - frontier pass; to close, to shut; relation

Traditional characters:

• 攻 - to accuse; to assault; to criticize
• 關 - frontier pass; to close, to shut; relation