For Ye Qing, learning to drive was a necessary skill for urban life. Indeed, he could have learned from anyone, but he had his reasons for choosing Old Wang.
Old Wang had driven for Lin Zhen Nan for over a decade—steady behind the wheel and highly trusted; thus, he was reassigned to drive for Lin Huayu. Despite his reputation as the North Ring Thirteen with a rogue's face, he remained loyal to the Lin family.
Having driven for the Lin family for such a long period, Old Wang was well-versed in their affairs. During his driving lessons, Ye Qing also managed to unintentionally extract lots of information about Boss Lin from Old Wang, who was entirely unguarded and forthcoming with information.