Puyang, Zhangluqiu Village, formerly known as Diqiu and Kaizhou, is a prefecture-level city under the jurisdiction of Henan Province. Located in the northeast of Henan province, at the junction of Hebei, Shandong and Henan provinces in the lower reaches of the Yellow River. Liudu Traditional Chinese Medicine School in this area was founded by Professor Zhang Han and located in Zhangluqiu Village. Learning books refers to places set up for people to study or give lectures in the old days.