唐珍 / Tang Zhen (late Han)
唐珍 / Tang Zhen enters the wiki through Hanji 904 as the official appointed sikong after 杨赐 is removed in 173 CE. The episode’s interpretive point is not a full biography but the appointment channel: Tang Zhen is identified as 唐衡’s younger brother, so his rise shows eunuch-family connection entering the Three Excellencies field.
His appointment sits beside epidemic, earthquake, amnesty, frontier pressure, and solar-eclipse notices. The page therefore treats him as an early office-churn marker under 汉灵帝, before later episodes develop Hongdu selection, office sale, and armed capture as more elaborate versions of appointment disorder.