How to give an unused knife a shiny mirror finish with sandpaper

I made a video on how to mirror finish a 20-year-old German Solingen that has not been used for many years. This time, I manually mirrored it using sandpaper for about 2 hours.In the video, I used cork to polish the knife without worrying about cutting my hands. If this is well received, I would like to teach you a simpler and more reliable mirror finish method using a Japanese knife. Please ask questions about the mirror finish and even questions. I definitely want to respond. #japanesefood＃chefsushi＃sushilovers＃japaneserestaurant#asmr 音楽素材→魔王魂 　　　　　効果音ラボ 　　　　　OtoLogic 　　　　　甘茶の音楽工房（英語表記＝Music Atelier Amacha） 　　　　　MusMus 　　　　　DOVA-SYNDROME