diff --git a/downloads/typescript-book-zh_CN.epub b/downloads/typescript-book-zh_CN.epub
index 1b379ba..df4e7bd 100644
Binary files a/downloads/typescript-book-zh_CN.epub and b/downloads/typescript-book-zh_CN.epub differ
diff --git a/downloads/typescript-book-zh_CN.pdf b/downloads/typescript-book-zh_CN.pdf
index eabb9e7..ff6dcf4 100644
Binary files a/downloads/typescript-book-zh_CN.pdf and b/downloads/typescript-book-zh_CN.pdf differ
diff --git a/downloads/typescript-book.epub b/downloads/typescript-book.epub
index 60f8ebf..9c4f212 100644
Binary files a/downloads/typescript-book.epub and b/downloads/typescript-book.epub differ
diff --git a/downloads/typescript-book.pdf b/downloads/typescript-book.pdf
index 6a55372..5e60f4b 100644
Binary files a/downloads/typescript-book.pdf and b/downloads/typescript-book.pdf differ