Half an hour's borrowing in exchange for a Ghost Candle was clearly a profitable deal for Yang Jian.
He could sense Wang Xiaoming's strong desire to research the human skin parchment, and if he continued to guard such an item like a miser guarding his wealth, revealing not a hint of information, then once Wang Xiaoming's research hit a roadblock, he might well turn his attention to Yang Jian himself.
And to be honest, Yang Jian didn't need to keep the human skin parchment; he was willing to trade it for the right price.
But not now.
He still needed the information the parchment provided as it was his key to understanding some unknown horrors.
It could help increase his chances of survival.
At Yang Jian's level, the supernatural events he encountered were no longer trivial matters; each one was nearly insoluble, and a single misstep could be fatal.