I listened to the new THREE.JS lecture right after I listened to the previous lecture, and it only contains the core content for practical application to projects, so it seems good for those who only want to know how to implement it. On the other hand, those who want to know in detail or those who are new to it may feel difficult to understand as they listen. I listened to the previous lecture and this lecture, and I think it's better because I learned a new way to develop!