What are the three steps of the trilogy of Old Dreams?

Old dreams 19 13, old dreams 1937, old dreams are looking forward to spring. According to Shen Yuzao's personal data, Shen Yuzao, the magazine's signing author, and Shen Yuzao's novel The Trilogy of Old Dreams refers to Old Dreams 19 13, Old Dreams 1937 and Old Dreams Rejuvenation, all of which are from the Republic of China, and each novel has a certain depth.