While Lex's clones hunted Sky Mortal beasts, that would be used to refill the beast storages, Lex cultivated and the fox beasts devoured as many beast cores and as much beast meat as they could.
[System can you explain the cultivation process of the fox beasts in more detail and tell me about their origin] asked Lex, hoping the system knew more than he could gather from his observations and brief knowledge about beasts.
{Ding, the system has some knowledge of the fox beasts that the host has come across, but most of it is not yet allowed to be revealed to the host.
However, what the system can tell the host, is that the fox beasts are rare and it will be almost impossible to come across anymore.