Princess Luosha was a pinnacle absolute saint who was trying to become a half-step saint king.
There was a small purple cauldron on her palm, and the saintly way rules emanated from that cauldron.
Obviously, that small cauldron was a rules saint weapon.
When a monk became a pinnacle absolute saint, the saintly way rules in his or her body would hit their limit, and if someone wanted to advance to half-step or one-step saint king, he must comprehend more intricate saintly way rules.
For example, Princess Luosha practiced space rules, so there was only one ultimate space rule in her lower abdomen.
That space rule was a 'rule seed,' and only after her comprehending space ways could it grow and blossom. If a monk's lower abdomen and body merged with space rules and heaven and earth, he would reach the most pinnacle realm under the Gods.
The saintly way rules in Princess Luosha's body was 'one,' and the pinnacle realm under Gods was 'infinity.'