docs(original): update learn tips content

Author: lzwjava

original/2024-11-27-learn-tips-en.md

@@ -71,3 +71,5 @@ title: Learning Tips
 * Write blogs, make videos, or create other content to share. People are narcissistic. By reviewing what you create, you will notice imperfections. That will give you the urge to improve.
 
 * Learn the history of things, like some specific math, electricity, or programming. It shows how things develop and the strong reasons for the order in which they appear. These parts are what textbooks miss.
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+* Often, if you learn a topic and encounter some difficulty, just repeat watching a video, listening to it, or reading materials about it around 20 times—it can have a magical effect. As June Huh said, repetition has some beauty.