To ordinary mortals, time could not be reversed. But in the eyes of Other Shore Practitioners, past, future, and present were one. The only thing that could slightly hinder them was the instant of World-Creation, when chaos first divided—a dividing node for every era.
Since the first Yuanshi Tianzun created the world, one Dao Fruit had marked one era, for a total of three eras.
The inability of Other Shore Practitioners from a new era to trace back into the previous era did not mean Ancient Ones could not do so.
After Daoist Venerable attained the Dao Fruit, Ancient Ones could still travel to the Primordial Ancient Star era. The same applied after the Three Pure Ones attained the Dao Fruit. As Yuanshi Tianzun Meng Qi created heaven and earth, ordinary Other Shore Practitioners born in the ancient era, such as the Azure Emperor and the Demon Saint, rose with the tide and became Ancient Ones capable of tracing back into the previous era.
Thus, they could manifest before Lin Xian and act within the Final Tribulation of the second Dao Fruit era. New Other Shore Practitioners like Dao Lord Qingyuan Yang Jian and Daoist Goku could not manifest, only lay out plans from afar. Their struggle belonged to the new era of the third age.
As for the first age, the Primordial Antiquity Era, even relatively recent Ancient Ones such as the Jade Emperor, Azure Emperor, and Demon Saint could not interfere. Those qualified to be called players were only Amitabha, Ancient Buddha Bodhi, Fu Sovereign, Wa Sovereign, Yuanshi Tianzun Meng Qi, Golden Sovereign Gu Xiaosang, and Haotian Lin Xian.
As for Heavenly Dao Monsters and the Supreme True Buddha, they were merely roadside scraps. Without other interference, even the Azure Emperor, who only met the passing threshold for