Beginning: Shen Yuan's home was ransacked when he traveled through time, and his father was wrongfully imprisoned. He used modern first aid knowledge to save the jailer's son, and used him to deliver news to expose the forgery of the file.
Breaking the situation: Using the simple water purification method recorded in "Tiangong Kaiwu" to solve the crisis of the spread of plague in Jinan Prefecture, it gained the attention of Zhou Chen, the governor of Shandong.
Based on: Repairing a small dam destroyed by floods, using the "trapezoidal dam body + bamboo cage filling stone" process, the cost was halved compared with the original plan, and he was appointed as the chief river engineer.
