In some parallel universe of Unrivaled Tang Sect, Wang Dong was chosen by the belief condensation system of Wu Linxuan and participated in the elite Soul Master Competition of the main universe where Sun Ming was. By a twist of fate, he was transformed into two separate individuals by Sun Ming.
Tang Wutong separated from Wang Dong's body.
After returning to his own universe, Wang Dong felt unburdened and no longer resisted soul devices, choosing to study them instead.
In "The Legend of the Undying", the Creator God's narrative further solidified Wang Dong's belief—
Soul devices are the future of the world!
In reality, after her return, Divine King Tang San descended to Shrek to take Wang Dong and Tang Wutong back to the Divine Realm, to reunite them into one.
The students and teachers of Shrek Academy finally confirmed the truth of the story from the "Huo Rearing Record"!
Wang Dong (Tang Wutong) was indeed the daughter of Sea God Tang San!