Shen Yuan was indeed correct; it was as ludicrous for a ghostly entity to enter into a trade with Yama as it was for a human to claim they would sell food to a ferocious tiger.
The 10th Hall Yama naturally restrained ghostly entities, and if he had been at his Peak Stage, he might have been able to mount some resistance with the help of his subordinate Ghost Immortals and Discarnation Divine Power. However, in his current weakened state after several eras of Spirit Energy depletion, he had no strength to resist the 10th Hall Yama.
But the Master of North Mang Mountain also knew clearly that this was his only choice; only by doing this would he have a chance to escape the Desolate Ancient Forbidden Land, to escape this narrow tomb.
The Master of North Mang Mountain fell silent, and Shen Yuan, who was outside the forbidden land, continued:
"I can give you a chance, a chance to live."