Chu Zhiyuan shook his head and said, "Your Highness, that's enough."
If he didn't interrupt, Cheng Miaozhen would have continued to imbue with yang energy.
Ten years of lifespan had already been transferred.
He felt it was sufficient; after all, ten years were a sizable gift.
Cheng Miaozhen gritted her teeth and said, "I want Mother to live as long as I do."
Chu Zhiyuan said, "Although this secret scripture is miraculous, it defies nature. Who knows what kind of backlash it may bring?... Going against the heavens, we should stop when it's appropriate."
He wasn't really regretful of Cheng Miaozhen's lifespan loss, as it wasn't his own lifespan being depleted anyway.
What he manipulated was Death Energy, which didn't consume his own lifespan.
Cheng Miaozhen wanted to give her mother more lifespan, but that was beyond his control.
His concern was potential unforeseen consequences.
