C1058 Voice of Doubt

"However, Boss Li didn't say anything at that time, only giving me a bottle of some sort of ointment. I opened it and saw, wow, it's as black as a pile of mud. I was puzzled. I said, Boss Li, what exactly is this thing that you gave me? Boss Li said that this is our new health medicine. After you try it, you will know whether or not the drug factory should produce this medicine