To drive straight into an enemy stronghold or capital; to attack the root of a problem or the primary target directly.

Historical administrative district (11th-12th centuries) covering parts of modern-day Jilin, Heilongjiang, and Inner Mongolia; famously mentioned by general Yue Fei as the target for a final offensive against the Jin dynasty.

Huanglong county in Yan'an, Shaanxi

Originally a vow by General Yue Fei to defeat the Jin army and drink to victory in their capital [[黄龙府|黃龍府|huang2 long2 fu3]]; used to describe the ambition to crush an enemy or to celebrate a major victory.

Huanglong branch of the Linji school of Chan Buddhism, named after Mount Huanglong in Jiangxi Province

huanglongbing; a destructive disease of citrus plants caused by bacteria and spread by psyllid insects