In his early years, the author was invited to give lectures in 8 universities in the United States. He answered lots of questions from the audiences on the spot. After returning to Beijing, he reviewed the questions and answers, sorted out the notes one by one, and gradually summed up his 50 years’ research and investigation results of the ancient architecture across China. That’s how this book is produced. Readers will learn 100 knowledge points about the common ancient architecture in China, and no longer abase themselves as a “green hand” in architecture.