[Why] In the middle and late Five Dynasties Ten Kingdoms, soldiers were arrogant and tyrannical, popular life was sorely battered, and the people were extremely weary of war. Emperor Shizong of Later Zhou Chai Rong on ascension vowed to clear the realm within thirty years and complete Huaxia unification. [What] Chai Rong sharply overhauled military affairs, building elite imperial guard troops, and vigorously rectified bureaucratic order, rewarded agriculture and silk, and abolished temples to expand the state fiscal base. He sought from the root to reverse the chaotic situation of military rule. [Who] Later Zhou Emperor Shizong Chai Rong was the most ambitious unification-minded reform emperor of the Five Dynasties period, clean and resolute in style. Veteran officers and commoners who followed him in south and north campaigns became the core foundation of completing unification. [How] This great reform definitively lit up the end-stage of the Five Dynasties dark chaos and greatly enhanced the Central Plains regime's economic and military mobilization strength. It laid the solid foundation of place for the Northern Song unification by Zhao Kuangyin.
Why
The historic event of Reforms of Emperor Shizong of Later Zhou represents a key developmental peak of the Huaxia dynastic system. The grand reforms that paved the path for Song's unified governance. By establishing this moral or administrative benchmark, it continues to shape the structural and philosophical fabric of ancient Chinese statecraft.