Yang Qing felt the scene before his eyes changed. He felt like he had been transported back to the night he met Ma Yuan.
That cool, clear sky night with a chilly scent in the air, a full moon, and a person trying to take his life in the river.
The scene started out with him flying over the skies atop Ellie's back. He was seeing things from a third person's perspective.
He could see himself, clueless, unaware of the rumbling storm that was about to befall him. Though what he knows now, if time was reversed, he would have still chosen to save Ma Yuan, hear him out, and help him in the finding of his wife and child.
The only difference between then and now would be, with a culprit in sight, he wouldn't need to wait that long before acting.
But all that was just wishful thinking on his part. He wasn't sure if there was even a cultivation art, treasure, or realm of cultivation that would enable one to reverse the flow of time and write their wrongs.