Both Tang and Sui tried to conquer Korea. From Han to Tang dynasties, parts of Vietnam were under Chinese rule. Qing made Xinjiang into China ~300 years ago. It's not imperialist in the Leninist sense, but it is similar to the pre-modern expansionism characteristic of the Romans, Turks, Persians etc.
Both Tang and Sui tried to conquer Korea. From Han to Tang dynasties, parts of Vietnam were under Chinese rule. Qing made Xinjiang into China ~300 years ago. It's not imperialist in the Leninist sense, but it is similar to the pre-modern expansionism characteristic of the Romans, Turks, Persians etc.
Xinjiang was under Han dynasty control