A concise dictionary of philosophy and Luo Ting. It is described in the revolutionary history comic book Red Rock that Liu Siyang found a concise philosophical dictionary and a Luo Ting. He gave the book to Lao Yuan, who didn't take the book or talk, but just pushed the register to him and let him register himself. Luo Ting is Turgenev's answer to the social problems existing in Russia at that time. Liu Siyang borrowed this book, which reflected his thoughts on the fate and future of China and his firm revolutionary belief.