I Set up a School in Dayin, and All the Students Became Elders

A modern lecturer traveled through ancient times and taught a group of students to become the most important officials of the Yin Dynasty without relying on magical skills or systems. He only relied on problem solving, training, review and organizational skills. The protagonist is good at taking exams in the early stage, but in the later stage he must face real politics, people's livelihood and power struggles.