The Four Great Masterpieces referred to Dream of the Red Chamber, Journey to the West, Water Margins, and Romance of the Three Kingdoms. They were all classic works of Chinese literature that had been widely read. It depended on one's taste and reading preferences. Both the Commercial Press and the People's Literature Press published these works and provided different versions and annotations. Therefore, he could first check the book catalog of these two publishing houses to find out which version was suitable for him, and then choose the version he liked to buy. In addition, you can also read these famous e-books through online reading platforms such as Amazon Kindle, Google Play Books, Apple Books, etc. These online reading platforms provided free downloads of e-books and made it easy to switch between different editors and versions.