Complete works of classical manuscripts of ancient books

Orphans, hence the name, are only one book left between heaven and earth. This means that there is only one version of a book. In fact, ancient books are very expensive. Many times poor scholars or backward areas copy by hand, depending on whether they are all people, whether they are well organized and when. Simply put, a unique copy must be very expensive, and the manuscript depends on time and quality. I suggest you see a professional, preferably a professor in the history department or Chinese department.