Traveling to the Three Kingdoms in Another World

A modern mechanical manufacturing scientific engineer who likes tinkering with time and space bracelets accidentally travels to an era of constant disputes, an era where heroes and talented people emerge in large numbers. How did he create this into an era where a hundred schools of thought contend, an era of prosperity, an era where doors are not closed at night, and an era where governance can be achieved without governance. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.