QinHanCalendars.html#Zhang1978">Zhang78</a></sup> from <span class="nowrap">N<sub>-215</sub></span> to month 12 in <span class="nowrap">N<sub>-103</sub></span>, and the T&#224;ich&#363; astronomical system beginning in month 1 in <span class="nowrap">N<sub>-103</sub></span>. The book does not provide this information. I deduce it by comparing the data in the book and data in the author's another book <i>Tables of Chinese Calendars in the Pre-Qin Period</i><sup><a href="QinHanCalendars.html#Zhang1987">Zhang8