C469 The Clue Was Cut off Again

"Where did you get those cells you sold? Who is the old master you told Sheng about?"

Jiang Cheng went straight to the point and his voice suddenly became cold and indifferent.

When they were talking about proper business, he was still very serious.

It was also because this was something his big brother had instructed him to ask, that he had just received a message.

After all