elplessly, "There is a substance inside that can enhance memory, but the extraction process must be extremely careful, otherwise the components will be destroyed. We tried for ten days, but it still d... good as someone else's five."Upon hearing this, the crowd was utterly astonished.Even medical school students looked up at Ou Yan, their eyes filled with admiration.Wow, Wan Qing messed up! Ou Yan ac...