However, both Qin and Li 's major works appeared about fifteen years before the first work of Yang. Zhu Shijie was only born about the time Yang Hui's first texts were appearing so his life also overlapped that of Yang.
Gayunman, ang parehong Qin at Li 's major gumagana ang lumitaw tungkol sa labing-limang taon bago ang unang gawain ng Yang. Zhu Shijie ay ipinanganak lamang tungkol sa mga oras Yang Hui unang teksto ay lumilitaw sa gayon ang kanyang buhay din overlapped na ng Yang.