Wang Shichong
In 621, when Li Shimin defeated Tang's major enemy Wang Shichong the Emperor of Zheng and captured the Zheng capital Luoyang (which had served as Sui's eastern capital), it was said that he sent Fang to the offices of Sui's legislative and examination bureaus of government to try to preserve Sui archives, but Fang's mission turned out to be unsuccessful as the archives had already been destroyed by Wang.