In the mid-19th century, the Qing Dynasty faced continuous internal and external challenges, leading to a severe crisis in governance. Geographically, China is a typical maritime-continental composite country, and its extensive coastline poses a significant challenge to maritime security. However, after several invasions by foreign powers from the sea, the already weak late Qing maritime defense rapidly deteriorated. Numerous intellectuals dedicated themselves to the pursuit of strong maritime power and comprehensive maritime defense, among whom Zheng Guanying was prominent. As one of the pioneers of modernization reforms, Zheng Guanying had a deep understanding of the Qing courts maritime defense work. His long-term engagement in the self-strengthening movement enabled him to absorb various experiences in maritime defense from both domestic and foreign sources, thereby forming a complete and systematic maritime defense ideology through continuous practice. qq It possesses significant relevance even today.
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