In 368 as well, the key official Yue Wan (悅綰), concerned about the growing corrupt practice by noble families of putting commoners into their fiefs—a practice that would mean that those commoners were only responsible to them, not responsible for paying taxes to the empire, leading to the empire's treasury being so lacking that it was unable to pay its officials—petitioned Murong Wei for a reform ending the practice. Murong Wei approved the reform and put Yue in charge of it, and Yue restored over 200,000 people to the tax-paying ranks. The nobles were all resentful of Yue, who died later in 368—and while most historians believed that he died of natural causes, having been already ill previously — the "Book of Jin" stated that he was poisoned by Murong Ping, who had much to lose from Yue's reform.