A page from the <i>Baopuzi</i>
Ge Hong
Original teachings around 400 BC, book published in 1152
Image from <a rel="nofollow" class="external text" href="http://kepu.jsinfo.gov.cn/big5/printing/evolve/evl313_0302b_pic.html">China Popular Science Exhibition</a>, scanned from <i>Bopuzi</i> (engraved and printed by Sixth son of Rong in the year 1152 in Hangzhou of the Southern Song Dynasty).