Complex sentence: Yongzheng's rule was seen as authoritarian and vigorous, but efficient: he meted out harsh punishments to officials found guilty of corruption and bribery; he used the confiscated assets and properties from corrupt officials to finance disaster relief efforts and his military campaigns in northwestern China.
Split into simpler sentences: Yongzheng's rule was seen as authoritarian and vigorous, but efficient. He also used the confiscated assets and properties from corrupt officials to finance disaster relief efforts and his military campaigns in northwestern China.