What if he traveled through the late Tang Dynasty and became a government servant awaiting death?
Gongsun Chi relied on modern geological knowledge to quietly make plans in troubled times.
Make salt and mine, accumulate resources, and dominate the salt gang;
Join a powerful vassal, be recruited into an official position, and enter the court;
In troubled times, he raised troops to intercept and kill Huang Chao, establishing his authority in the world;
Hold the emperor hostage, sweep the vassal towns, and conquer the barbarians;
End a century of chaos and create unparalleled hegemony!