Oracle Bone Script (甲骨文), https://omniglot.com/chinese/jiaguwen.htm. 

“The History of Paper.” The History of Paper | American Forest and Paper Association, 9 July 2021, https://www.afandpa.org/news/2021/history-paper. 

“Chinese Paper Money.” Silk Road, 1 Oct. 2018, http://www.silk-road.com/artl/papermoney.shtml/. 

​“Papyrus.” Encyclopedia Britannica, Encyclopedia Britannica, Inc., https://www.britannica.com/topic/papyrus-writing-material. 

​“The Four Treasures of the Study.” Four Treasures of the Study, Chinese Culture, China Highlights, https://www.chinahighlights.com/travelguide/culture/four-treasures-of-the-study.htm. 


​