The rule behind the birth of Taboo things is still not entirely summarized by major organizations; they only know that the longer an item is exposed to the radiation from God's bones, the greater the chance it becomes a Taboo thing.
When a meteor falls, it brings with it God's bones, forming God's ruins.
Generally speaking, the size of God's ruins varies, but they contain many items. Some become Taboo things, while others do not, and the level of rule pollution they cause is also different.
Some God's ruins have been purified, and some items within, although not initially Taboo things, could become one after a few years.
Some God Hunters who dare not enter the ruins secretly venture into these places to 'pick up trash' and search for Taboo things, hoping to strike it rich if they find one.