According to the Complete Works from Azure Residence by Yi Deok-moo, when Jeon was very young, he went to a mountain temple to study in solitude.
One day while they kissed each other, the fox's magical marble went into Jeon's mouth, and he swallowed it.
According to the Unofficial History of the East Land, one day between 1522 and 1566, Yi Gil's farm (which is in today's Bupyeong District) was suffering from an epidemic, and Yi's serfs and neighbors were ill in bed.
[3] As he was Taoist heretic, if not anarchistic, there are some legends that Jeon opposed the Joseon dynastic government and the king.
Surprised, they dig up Jeon's tomb and opened the coffin to find there was no body.