"Can lifespan be measured too?"
"Of course it can."
Perhaps because he had answered too many questions already, the gray-robed cultivator simply explained a little more. "This item is called the Pill-Measuring Ruler. It is a genuine fifth-grade Yellow-rank Dao Soldier, and what it seals is 'measure.'"
"All things under heaven have their measure. Bones have bone age, blood has blood count, qi has qi count—none can escape the word 'measure.'"
"The ruler is placed against the wrist bone. First it measures bone age, then the fullness or depletion of the blood marrow within the bones, and finally the speed at which the qi mechanism circulates."
"Though it cannot determine one's exact remaining lifespan, by extrapolating from bone age and blood vitality, it can estimate it roughly. The margin of error is only around a thousand years."
At this point, he let out another cold laugh and added an explanation.
"There are always fools who do not know whether they are dead or alive, trying to exploit loopholes in the bank. Some disguise themselves as young rogue cultivators, while others use arts to conceal their qi aspect. They look brimming with vitality, but in truth have only two or three years of life left.
"Such people have no more than two intentions. Either they borrow a huge sum and stake it all on a chance to break through and extend their lives, or they simply leave it for their sect, descendants, and heirs. After all, once they kick their legs up and die, everything is over and done with."
Jiang Yuechu raised a brow. "But doesn't your bank keep accounts even after a person dies?"
"How could those be the same?"
The gray-robed cultivator gave her an odd look.
"For example, a Roaming Void Sea cultivator at perfection, with mature