He Yiran certainly knew that when those two types of medicine were first released, Mei Mengzhen also followed the instructions to the letter, not changing a single word, and all of this didn't need to be taught to him; he knew that reading the instruction manual was entirely sufficient.
After examining the three types of medicine, He Yiran had a particularly good feeling about the life-saving pill, "Zhenzhen, I think this life-saving pill is very good. If someone could test the medicine for us, I think the price could be multiplied by quite a bit."