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In the late 390s BCE, King Dao of Chu made Wu Qi his chancellor. Wu's reforms began to transform Chu into an efficient and powerful state in 389 BCE, as he lowered the salaries of officials and removed useless officials. He also enacted building codes to make the capital Ying seem less barbaric. Despite Wu Qi's unpopularity among Chu's ruling class, his reforms strengthened the king and left the state very powerful until the late 4th century BCE, when Zhao and Qin were ascendant. Chu's powerful army once again became successful, defeating the states of Wei and Yue. Yue was partitioned between Chu and Qi in either 334 or 333 BCE. However, the officials of Chu wasted no time in their revenge and Wu Qi was assassinated at King Dao's funeral in 381 BCE. Prior to Wu's service in the state of Chu, Wu lived in the state of Wei, where his military analysis of the six opposing states was recorded in his magnum opus, "The Book of Master Wu". Of Chu, he said: