霸權擁有生產高附加價值與高科技商品的獨佔地位，加之次等國單方依賴霸權商品，塑成霸權使用非暴力的經濟脅迫（economic coercion）措施，施壓目標國，以達到「不戰而屈人之兵」的戰略、政治與經貿目標。鴉片戰爭前，清帝國多次採取「封關」等貿易脅迫措施，禁絕茶葉出口，迫使英國等互市外夷屈服讓步，強化清帝國的經濟脅迫習慣（habit）。國際關係與外交決策的觀點，多批判清政府決策菁英的自大無知，或是強調滿清政權的朝貢制度天朝思維，而少有省思，清政府採取「封關」脅迫措施的決策過程，以及造成清..

Hegemons possess a monopolistic position in producing high-value-addedand high-tech goods, coupled with the unilateral dependence of subordinate states on these products. This dynamic enables hegemons to employ non-violent economic coercion to pressure target states, achieving strategic, political, andeconomic objectives aligned with the principle of “winning without fighting”. Before the Opium War, the Qing Empire frequently adopted trade coercion measures, such as “closing borders”, to ban tea exports and force..