Yan definitely wouldn't know!!A blush crept onto her face, and she lowered her head, as if to say: "Oh, stop it! Don't be so obvious!"The head of the department didn't expect Si Yechen to come for th...s shocked. At that time, the virus was rampant in Africa and killed many people. There were also a few cases in China.Just when people were in a state of panic, a cure appeared out of nowhere. It was...