“Zhu Youke”, “Secrets and Strange Books”, five volumes of Qianyuan Henryzhen in the late Ming and early Qing Dynasties

“Qianyuan Secret Edict” Qing edition

Zhu Youke. The secret book. The five volumes of Qianyuan Henry Zhen. The banknotes of the late Ming and early Qing Dynasties can be downloaded for free on Baidu Netdisk