Emperor Taizong stabilized China’s government by

implementing a series of political reforms and instituting policies that promoted meritocracy, efficiency, and accountability within the administration. He established a centralized bureaucracy, reformed the tax system, standardized the legal code, and expanded the civil service examination system to ensure that government officials were selected based on their abilities and qualifications rather than noble birth or political connections. Taizong also promoted economic development and infrastructure projects to strengthen the empire's stability and prosperity. Through his wise governance and leadership, Emperor Taizong was able to stabilize China's government and establish a solid foundation for the Tang Dynasty's success and longevity.