Sun Tzu The name Sun Wu does appear in later sources such as the "Shiji" and the "Wu Yue Chunqiu", but were written centuries after Sun Tzu's era. The use of the strips in other works however, such as "The Methods of the Sima" is considered proof of Sun Tzu's historical priority. According to Ralph Sawyer, it is very likely Sun Tzu did exist and not only served as a general but also wrote the core of the book that bears his name. It is argued that there is a disparity between the large-scale wars and sophisticated techniques detailed in the text
The Book of the New Sun Severian also notes that the waiter very much resembles himself and it is implied that the waiter is Severian's father. The book ends with Severian exploring the citadel and retracing Triskele's steps through an underground building. Seeing the dog's footsteps and his own he follows the latter, returning to the Atrium of Time. Unlike the four earlier parts of the Book of the New Sun, Urth of the New Sun mostly takes place outside Urth. The book is yet again a continuation of Severian's narration of the aftermath of his ascent to the throne and subsequent journey "between the suns"