C670 What a Huge Pit

Yang Chen laughed: The essence of this medicine is partially produced by me, and there are some side issues or side effects that I am trying to extract, so that the production of this medicine can continue, and if it is successful, then the production rate will increase again, and 20,000 of them per month is not impossible!

Instead, Sun Qian shook his head and said, "We should not be so sure of