C452 So-called Lunar Crystal

Seeing Wu Tian walk over, a stiff smile appeared on Wu Tian's grandfather's face.

At the same time, Wu Tian's grandpa said so.

"Little Tian, you know this thing, right?"

Wu Tian's grandpa had never been close with a grandson like him before, so no matter if it was his smile or his words, they all seemed very stiff and awkward.

It looked as if he couldn't speak at all.

However