"Good tools are a prerequisite to the successful execution of a job."
After Su Zheng started teaching Ye Shuang the skills, she did not explain that much regarding the technique and action. Basically, she only told Ye Shuang to pay attention to a few things and practice often. However, Su Zheng paid a lot more time when it came to the selection and creation of various tools. She used a lot more time and effort to explain this part of the job.
"For example, razors. You know they are used to slice open leather, so the most important thing is sharpness. It won't work if you use a fruit knife to try to slice open someone's handbag; it must be something that can create a gash with just a slash."