Complex sentence: After he turned into an old man he found a mirror, then took the body of a crane when touched by a crane feather from the last box, in another he ate a magic pill that gave him the ability to breathe underwater.
Split into simpler sentences: After he turned into an old man he found a mirror, then took the body of a crane when touched by a crane feather from the last box. In another he ate a magic pill that gave him the ability to breathe underwater.