Thank you, Haning, for leaving a review. The link you mentioned is an article translated by Kim Jeong! It would be good to refer to it together as you said. Since I translated an article published by Apple as a document, there may be several translations. This is a lecture that explains concepts and provides simple practice for those who have difficulty understanding it through the document alone, so if there is any part that you think is lacking in explanation, please let me know and I will supplement it.🙏