During the 13 years from 1936 to 1948, Yan An was regarded as the holy land of revolution and the seat of the CPC Central Committee. It witnessed the historic transformation of the CPC from small to large, from weak to vigorous, and from defeat to victory. This book aims to inspire all Party members to lead the Chinese people of all ethnic groups to stay true to their founding mission and strive to realize the Chinese Dream of the great rejuvenation of the Chinese Nation under new historical conditions.