Once the Slave Mark is planted, there would hardly be any chance to turn the situation around.
However, when Zhang Chi prepared to plant the Slave Mark on Zi Mian, she felt excited instead. In order not to let Zhang Chi discover her excitement, she quickly closed her eyes and pretended to be in complete despair.
Of course, she would not look forward to becoming Zhang Chi's slave. What made her excited was the limitation hidden within the Slave Mark.
If there were only the restrictions of the Righteous Path, Slave Marks would have long flooded the world of cultivation.
The reason why they are not widely used is because of their limitations.
First, there are many uncontrollable things like pride and self-esteem in living beings that may cause the Slave Mark to wear away to varying degrees. Once broken, the mark cannot be applied again.
Second, one person can possess a maximum of three Slave Marks, and for each additional mark, the control of the Slave Mark weakens.