Where did Jiang Ziya and Ji Fa go to the underworld?

Jiang Ziya and Ji Fa went to the underworld.

Jiang Ziya suspected Xibohou was reincarnated and wanted to go to hell to find him, according to the story of "The List of Gods".

Jiang Ziya, surnamed Jiang and Lushi, is famous. Ziziya, flying bear, also known as King Taigong, Shi, Lu Shang, was a politician, strategist and strategist in the late Shang Dynasty and early Zhou Dynasty, the founding father of Zhou Dynasty, and the founder of military science.