Yu Suxin smiled and said, "You're overthinking it. Not many people know how to use such techniques, and even if they became widespread, the world wouldn't fall into chaos. It's easy to become a completely new person using this method, but it's much harder to disguise oneself as someone else.
Even if one practices to perfection, at most, they can resemble the person they're trying to imitate by eighty percent. Besides, everyone has different habits and ways of behaving.
Even if one can perfectly mimic both appearance and voice, it's still difficult to deceive those who know them well. Most importantly, this technique can only change muscles, not bones or body shape. There aren't many people in the world with similar body shapes for you to imitate."
