Hi Paul and Akira, Our Chinese version editor Yunjing Li points out that there is a line missing in Figure E.7, there should be 7, but Figure E.7 has only 6. Similarly, I found there should be 6 lines in Figure 10.18, but actually it has only 5. Although I am very glad to fix the above possible bugs, fixing them is beyond my capability. Thanks, Zhouyi Reported-by: Yunjing Li Reported-by: Zhouyi Zhou <zhouzhouyi@xxxxxxxxx>