A fixed-sample observatory of the 2009 medical rule, the 2017 national survey, the Mr C employment case, PUH3, Jin Xing’s television history, and A Day of Trans, examining how search results, archival metadata, and automated summaries preserve or compress historical context.

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.