This chapter continues to summarize the excellent student assignments in the National Quality Course “Big Data Analysis and Applications” at Beijing Institute of Technology. Compared with the application projects introduced in Chap. 19 , the application cases introduced in this chapter are specific, primarily involving the authorship analysis of the first 80 chapters and the last 40 chapters of “A Dream in Red Mansions,” the network public opinion analysis of Ding Zhen’s popularity, involving key natural language processing technologies including web crawlers, named entity recognition, machine reading comprehension, sentiment analysis, text summarization, and machine translation, etc.