If a person can know how a family lasts and a country rises and falls by reading just one book in his lifetime, this book must be a history book. This book takes "Three Families Divided into Jin" as an example, runs through the thousand-year cycle of chaos, and integrates the power game, the people's support, and the gains and losses of the system. It can be seen from reading: the rise and fall depends on virtue, not the tripod, and survival and death depend on people and circumstances. There are lessons learned between the lines, and there are enlightening thoughts behind each chapter - history is not only a story of the past, but also a mirror of the future.