How did Fuxi Jade Emperor become the Jade Emperor?

Shame. Who told you that Fuxi became the Jade Emperor?

The full name of the Jade Emperor is called "Heaven, Heaven, Golden Que, Supreme Nature, Milla to the True Jade Emperor".

His real name is Zhang Bairen, and he was sent by Taibai belt of venus to be the Jade Emperor in Heaven.

Fuxi is the Yellow Emperor among the Three Emperors and Five Emperors, and has nothing to do with the Jade Emperor. The Jade Emperor should be respectful in Fuxi.

Because Fuxi is Nuwa's brother, and Nuwa is a saint, much more than the Jade Emperor NB.