The content of the novel is that two high school students traveled to the Tang Dynasty and met the young Li Shimin of Tang Taizong. The main reason was that a smart student built a time machine, and the time machine later transported them to the Tang Dynasty. Hello everyone! I am a foreigner who is learning Chinese and I am very interested in Chinese history. However, my Chinese level is not very good, so please forgive my poor Chinese and provide valuable opinions. Thank you!