Luck, in some sense, is intangible and elusive, yet it truly exists. Often, many things don't turn out the way you do them. Some would say that being favored by the heavens is what brought them success, when in fact, it is merely luck. Therefore, luck lurks within but constantly affects every living being.
Tang San didn't understand why he was so fortunate, fortunate enough to almost seem like he was going to restore his status as a Godking, and reclaim his wife. This greatly relieved him, for it would be too unreasonable if he, someone so lucky, were to be killed by the Crystal Great Demon Emperor.
However, he couldn't figure out where his super luck came from—was it from Heaven Garden? The Dual Pole Domain, or his own divine consciousness?
The last possibility was the least likely, since his divine consciousness didn't belong to this plane and would only be rejected, not accepted. But since he was so fortunate, it was always a good thing.
