Complex sentence: He also suggests that this Chinese Pangu myth had come from India, Egypt, or Babylon and mingled with the origin stories of other cultures, eventually changing into the later narrative more popular today.
Split into simpler sentences: He also suggests that this Chinese mythology of Pangu had come from India, Egypt, or Babylon. Apparently, this story mingled in with the origin stories of other cultures, eventually changing into the later narrative more popular today.