Paper presented on Friday 11 June 2021 at the Digital Medievalist Global Symposium The past, present, and future of Digital Medieval Studies for the Asia & Oceania Panel, in the session Engaging in Chinese Literature. The Chinese Text Project (https://ctext.org) is a crowdsourced digital library of premodern Chinese writing, containing over 35 million pages of scanned primary source material and billions of words of transcribed text. In this talk I describe the implementation of a crowdsourced semantic annotation system for these texts, as well as the joint construction of a crowdsourced knowledge graph recording data covering close to 3000 years of Chinese history.