When he was captured, he initially thought the other party would kill him directly, but he didn't expect this old guy to actually want to take over his body.
His Dao was a unique Extreme Dao; even if the other party was an unparalleled powerhouse, they couldn't possess him. In the end, due to a twist of fate, they merged into one.
He had no choice but to swear an oath, temporarily sharing a body.
But this was not a long-term solution.
Bai Junwang wanted to reforge an origin source that didn't belong to the Qishen Temple, aiming to cultivate back to the tier 6 Emperor.
Now, Jian Wushuang, in the Earthly Realm, was conducting a ritual to forge the origin source for the other party.
Just a little more was needed. As long as he helped Bai Junwang refine a new origin source, the other party could separate from his body.
If they violated the oath, both of them would witness the collapse of the Great Dao.