I'm Setting up a Chess Game in Battle Through the Sky

The earth traveler Xiao Liang was reborn as the grandson of the third elder of the Xiao family. With the double blessing of the original knowledge and the mission system, during the years when he and Xiao Yan grew up together, while guarding the brotherhood and rewriting the destiny of the Xiao family, he embarked on the road to the pinnacle of dual cultivation of fighting spirit and alchemy, and gained many confidantes.