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 fixed-sample observatory of government rules, hospital pages, community surveys, litigation records, community archives, web archives, and search indexes, proposing a source-survival stack and discovery-redundancy model for mainland China’s transgender history.

A historical map of organizational carriers, service networks, medical referral, community knowledge, and digital preservation in mainland Chinese transgender advocacy from 1995 to 2025.

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.