Chen Yan is a researcher on the history of the Three Kingdoms. He is deeply involved in the military, economic and cultural research of the late Shu-Han Dynasty. He is proficient in basic industrial principles (mechanical design, metallurgical technology) and modern management thinking in his spare time. When he was repairing Liu Chen's sword in Zhaolie Temple, he was involved in the historical energy remaining on the sword and traveled through time to become Liu Chen, the king of the North in the fifth year of Jingyao (262 AD). He has a calm and tolerant personality and is good at long-term planning. In the early stage, he aimed to "preserve life + consolidate power" and in the later stage, he took "promoting Han + innovation" as his mission. He has the double golden fingers of "historical prophet" and "technical reserve", but he needs to deal with unknown crises caused by the "butterfly effect".
