Liu Tong is a famous author whose works are usually copyrights to his works. Therefore, we cannot sell or provide electronic copies of his works directly on the Internet. If you want to read Liu Tong's works, it is recommended to go to a physical bookstore or online bookstore to buy his paper books, or to consult a publishing house or a publishing company to ask if there is an electronic version that can be downloaded. In addition, you can also follow Liu Tong's official social media account to learn about his recently published works and new book recommendations.