The Zhang Runzi 张润子
Paul PengZhang Runzi (?–1104) was a figure of the Northern Song Dynasty. He traveled around Mount Song and often worked as a servant at various Taoist hermitages, yet he never accepted payment for his services. He had a thorough understanding of the practices for cultivating internal elixir (a core discipline in Taoism focused on refining vital energy within the body).
