...The sooner you understand that language learning has no skills, the less time and money will be wasted on various materials and experiences, and the fewer detours you will make. This guide will dig deep into the essence of language learning (mainly in Chinese for example) and think in a way that programmers can understand easily, and provide their own deductions based on the essence. Training methods and experience are for reference. The most important thing is that you have to design your own training methods based on the essence.