C399 It Was Actually the Demon King

Rong Yi had been following Yang Xuefeng's car all the way to the foot of Andwell Mountain. This made Rong Yi extremely shocked, because he never thought that Yang Xuefeng would drive alone to Andwell Mountain in the middle of the night. In such a desolate place, where would a research and development base be located? Which technician would come here to work? This was simply unbelievable