Who is the incarnation of Fengdu Emperor?

According to Taoist legend, Fengdu Emperor, also known as "Fengdu Emperor", is the supreme ruler of the underworld in China and the "underworld emperor" in China. Legend has it that Fengdu Emperor is the incarnation of Wei Zi's great emperor in the underworld, that is to say, Wei Zi's great emperor is in charge of the underworld at the same time (that is, part-time job). Because Wei Zi was too busy with official business to take care of the affairs of the underworld, he recommended Zhang Heng, the most famous ghost emperor in the north, to take over Fengdu Emperor's position.

The Jade Emperor remembered that Zhang Heng, the ghost emperor, had ruled the northern underworld for 10,000 years, which was a great contribution, and he was also of the same surname and kin. The Jade Emperor's surname is Zhang Mingjian (that is, Zhang Jian), so the Northern Ghost Emperor was named "Zhang Heng" and promoted to "Fengdu Emperor". It can be seen that Fengdu Emperor was promoted from the Five Ghost Emperors.