Synthesized answer
The provided passages do not contain the answer to what questions remain unanswered. The only information given is the title of the book, "The Liberal Tradition in China" by William Theodore De Bary, its category as Philosophy, and the page count as 122 [1]. There is no content from the book itself that addresses the question of unanswered questions.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: The Liberal Tradition in China by William Theodore De Bary Categories: Philosophy Pages: 122