Can't be understood as cheating. Only with the growth of age, more and more knowledge is accumulated. For example, when I was in middle school, the topic of primary school was very simple. Now I can solve the problem that you thought was difficult with no effort. Without gradual accumulation, how can we have current knowledge! What I am learning at present is just teaching people who don't know (such as children and adults). This is the truth of "preaching, teaching and dispelling doubts", and it is also the essence of teaching and updating from generation to generation. I think it is objective to live and learn.