〖 In other words, it is currently the fourth cycle 〗Negary finally understood. It was during the final moments of the third cycle that he entered this world, and as the will of the world discovered him, it entered the fourth cycle.
The Yu Guang Ming that he saw at Yue Bu was most likely a person from the later period of the third cycle, and the fact that he was able to borrow the 'error' that Negary brought in order to go from the previous cycle to this one showed just how terrifyingly powerful he was.
However, even such a powerful person was forced by the New Deity and Progenitor Dragon to have no choice but to reset the world's timeline.
Even though he had learnt of how strong those two were through the books of the Flame world, the Flame world that he knew was one that had already been greatly weakened, it couldn't be helped that his understanding of their relative power was skewed.