[Why] After Japan's Meiji Restoration succeeded, its ambition swelled and it intended to seize dominance over the Korean peninsula and carve up China. The Beiyang Fleet was strong only in appearance, and the thirty years of industrial-military achievement of the Self-Strengthening Movement was about to face the cruel test of modern warfare. [What] Chinese and Japanese armies engaged in comprehensive combat across the Korean peninsula, the Yellow Sea, the Liaodong Peninsula, and Weihaiwei. The Beiyang Fleet, gravely wounded after the Yellow Sea battle, retreated to defend Weihai and was finally wholly annihilated, and the Qing court was forced to sign the humiliating Treaty of Shimonoseki. [Who] Beiyang Minister Li Hongzhang was the core figure of the Self-Strengthening Movement, bearing heavy responsibility for peace negotiation after defeat. Japanese Prime Minister Ito Hirobumi was the highest decision-maker planning the war, while Beiyang generals like Deng Shichang were heroic national martyrs. [How] The defeat at Jiawu thoroughly shattered the last fantasy of celestial empire and exposed the fundamental limitations of the Self-Strengthening Movement. It directly birthed the reformist outcry of the Hundred Days' Reform and the anti-Qing wave of the Xinhai Revolution, opening a wholly new stage of Chinese modernization.
Why
The historic event of First Sino-Japanese War represents a key developmental peak of the Huaxia dynastic system. The historical watershed exposing the limits of self-strengthening and igniting reform and revolution. By establishing this moral or administrative benchmark, it continues to shape the structural and philosophical fabric of ancient Chinese statecraft.