This was an excuse Xu Jin had thought of long ago.
Prior to this, Xu Jin had inquired from various sources that the millennia-aged turtle shell was a precious ingredient and one of the main components of the Dragon Turtle Soul Refining Pill. Ordinary people, even ordinary alchemists, couldn't get their hands on it.
But many wealthy individuals sought to purchase it simply because it could nourish the heart and calm the mind. This effect, although faint, was effective on ordinary people.
After some thought, Xu Jin found such an excuse.
It seemed reasonable.
"Lord Xu's filial piety is commendable!"
Ling Mao began with a compliment, then furrowed his brow in thought for a moment, "Lord Xu, the millennia-aged turtle shell is in high demand, and due to its age, it's very rare. May I ask if Lord Xu wants a small piece or an entire shell?"
"Of course, an entire shell."