In order to be able to do this "simple" movement repeatedly without error, Yang practiced 12 hours a day for the first three months after opening for business, enduring joint inflammation and numbness in his hands, gradually mastering the necessary skills.
為了把這樣「單純」的動作反覆做到好，楊中化剛起步的前 3 個月關節痛、手麻，一天工作 12 小時，漸漸才上手。