Why can't China's current education adopt traditional education, but stipulate corporal punishment and disguised corporal punishment?

There is also corporal punishment in traditional education, such as using a ruler. The difference between current education and traditional education is not whether there is corporal punishment, but the purpose and method of corporal punishment. Nowadays, education aims at practicality and examination, while traditional education aims at educating people and cultivating themselves. The so-called preaching, teaching and dispelling doubts is to preach as the main task. There is no preaching in present education, which is also the reason why people are confused.