(1) Isn’t it also true to learn and practice from time to time? ("Confucius. Xue Er") (2) If you review the past and learn the new, you can become a teacher. ? ("Confucius. Xue Er") Both sentences talk about learning issues. Of course, when giving lectures in ancient times, people always sought out teachers to learn from them. The "practice" mentioned here is to allow you to practice consciously after the lecture - which is equivalent to today's homework. "Reviewing the past and learning the new" is also a learning issue. It means that after listening to the class, you should review more previous knowledge. This means that after listening to the teacher's lecture, you should review more below - this is equivalent to the homework of current students! ***Mian!