C4491 Dragon Kingdom of the North Mountain
Jiang Shenwu did not plan to use Su Yiyi's method.
Then, if he wanted to break through to the eighth stage of the Nirvana Tribulation Stage, he had to think of other ways. Perhaps, he could use external help.
This external force was naturally a formation.
It was a pity that Jiang Shenwu knew nothing about this type of formation