This research map organizes public transgender history in mainland China into seven intersecting paths—medicine, identity documents, work and courts, community infrastructure, public language, documentary regimes, and digital preservation—and introduces a historical conversion chain plus a source-switch method for reproducible reading.

A research encyclopedia entry tracing legal gender recognition in mainland China through household registration, resident identity cards, gender appraisal, local public-security procedures, and downstream institutional records, with an original document-cascade model.

Using hospital records, media narratives, administrative rules, community hotlines, litigation and surveys, and digital archives, this study reconstructs mainland China’s transgender public history through six documentary regimes and a reproducible source-card method.