Complex sentence: After Han conquered Zheng in 375 BC, he rose up in the ranks of the Han officialdom, successfully reforming the bureaucracy in the State of Han; his reforms would later be copied by other states.
Split into simpler sentences: After Han conquered Zheng in 375 BC, he rose up in the ranks of the Han officialdom. Shen successfully reformed the bureaucracy in the State of Han; his reforms would later be copied by other states.