This book tells a unique and true story of the Great Wall of an Englishman. Over the past 30 years, William Lindsay has experienced all kinds of hardships and joys, losses and gains, from a trespasser on the Great Wall to an influential guardian of the Great Wall and a disseminator of the Great Wall culture. He described the magnificence of the Great Wall with beautiful words, expressing his love and affection delicately. On the road leading to the Great Wall business, there is always the firm support and selfless dedication of his beloved wife Meiyu. They settled at the foot of the Jiankou Great Wall in Beijing, shared the stories of the Great Wall and his study of the Great Wall with visiting Chinese and foreign guests, and took them personally. Everything comes from the Great Wall, and everything is for the Great Wall—this has also become the way of life of the Lindsay family.