History All-Stars Simulator

The system told me that this competition in the different dimension world simulates the world map of the Three Kingdoms in Chinese history. And I am in the Baidi City where Liu Bei died of illness, that is, Yizhou-Yongan City. So, what should I do next? The system gave me the initial conditions to randomly select 10 commanders, 10 generals, and 10 civil servants from history. At the same time, the same conditions apply to the other 19 people on earth - in other words, everyone may choose the same person, and the personality of the person selected is not controllable, and the system does not explain it. Therefore, I can't just choose based on strength, I have to consider the suitability of my lineup.