He's Jiang Xuannian

After he moved into the Jiang Clan's territory, Jiang Changsheng's life returned to being boring. He did not look for Jiang Xun immediately. Instead, he continued to cultivate the Primordial Chaos Indestructible Golden Body Technique.

He discovered a wonderful thing. Even though he was not in his original body, his memories still existed. In other words, the experience he accumulated when he comprehended and cultivated here was real and not a fantasy.

To a certain extent, this was an opportunity.

He studied immortal techniques in other space-time and received the accumulated experience when he returned to reality. If he were to cultivate again, it would be twice the result with half the effort.

This allowed him to have a deeper understanding of the Dao Ancestor mentioned by the Kunlun Immortal.

Could it be that casting himself into the past, present, and future was also a method of cultivation?