Three Kingdoms Survival Manual

Zhang Yan, an ordinary modern social beast, once traveled through the Three Kingdoms and became Xu He, a small commoner in the Three Kingdoms. He did not know martial arts and had no system. As an ordinary person in troubled times, how can she survive in this turbulent era with her own wisdom? (This book is an ancient novel and will generally follow the historical trajectory, but it will also make some adaptations for the development of the plot. Please do not enter if you mind)