Disciples are different from the Four Books and Five Classics. Those are called Confucian classics. Disciples are often called feudal dross. When Japan occupied the Northeast and conducted slavery education, the textbook was this disciple's code (in the Qing Dynasty, it was basically used for slavery education. You see, officials in the Qing Dynasty were all slaves. It is still in the museum of the puppet Manchukuo, as a negative teaching material. I don't know how it got so hot in recent years.
Moreover, Disciples Rules is not an eternal classic. The four books and five classics have a history of more than two thousand years. Disciples' Rules was written by a poor scholar in Qing Dynasty to teach private schools to make money. If this can also be regarded as an eternal classic, what about Yi, Shi, Shu, Li, Chun Qiu, Li Ji, Xiao Jing, The Analects of Confucius, Mencius and Er Ya?