Mu Rongche said, "This red silk thread is crafted from the finest strand of pure iron, and also contains a single strand of hair from both of us. Once it's bound and tied, it can never be undone. Not even a knife could cut it—unless your foot is chopped off, it cannot be removed."
Before he put it on, he had asked her whether she wanted to wear it.
Once it was on, it could not be taken off.
With excitement, she nodded her head. "Of course I want to wear it! Let's see who in the future has the ability to chop off my foot and take it off!"
Mu Rongche laughed, carefully putting it on for her, and taught her that, once their hairs were intertwined, even though they hadn't had their wedding ceremony yet, they were fated husband and wife.
He said, "When hair is joined, so are husband and wife, their love beyond all doubt."
She didn't understand what that meant, so Mu Rongche patiently taught her word by word, saying he would always trust her and always cherish her.
She believed him.