C80 Is It Beautiful Beautiful Is a Good Diamond

Shi Cheng couldn't help but laugh, "I don't know if it is famous, but I am indeed Shi Cheng. What can I do for you?"

The man had a flattering smile on his face, "To tell you the truth, I have thought of several ways to find diamonds. I can use water, oil, or find a small porcelain piece to grind. Miss Shi Cheng, what do you plan to do?"

Shi Cheng looked at the man and slowly said