```
Mastering a single secondary rule is enough to become a Sixth Stage Emperor Realm powerhouse.
According to what Jiang Chengji said in the past, those in the Emperor Realm can master multiple secondary rules and their strength varies based on the number of rules they control.
Of course, if you control an extremely powerful rule, you might be much stronger than those who master a number of secondary rules.
Even within the three thousand great daos, there is a hierarchy.
Before one becomes an Emperor Realm cultivator, every cultivator focuses on comprehending one secondary rule, and no one in the Rule Integration Realm cultivates multiple rules at the same time.
Because a cultivator's energy is limited and different rules can easily cause conflicts with one another.
If it's just different rule particles, there is no issue, just like the rule particles contained within Divine Powers.
