C416 He Could Only Rely on Dan Wei?

Shan Wei said slowly. Xiao Jingshen's expression also became more and more surprised.

If it wasn't for Shan Wei, who would have known that there was such a story behind the ailuo virus?

"In the beginning, without testing on people, the potion wouldn't be improved much. However, during this past year, teacher and I have conducted many experiments on those people from the Qin Nation