Actually, families like the Zang Family knew many families' secrets.

And they were on good terms with some of the families.

After all, the more they knew, the more uneasy others felt.

Therefore, some families would take the initiative to curry favor with the Zang Family in order to know how much the family knew about them.

After a few years, they would be on good terms with the Zang Family.

If it went on for decades, they would ...