n> are listed in Table 9 at the end of the paper.</p>
    
<p>For the early Han calendar, Zh&#257;ng concludes that it is impossible to find a calendar based on the <i>s&#236;f&#275;n</i> system that can fit all the data. In other words, if the calendar used in the early Han was based on the <i>s&#236;f&#275;n</i> system, there must be some changes during the period. If there was no change in the calendar, it could not be based on the <i>s&#236;f&#275;n</i> system. Zh&#257;ng decides to give up the <i>s&#23