I Opened a Bank in Great Tang

Wu Xiaofei woke up one morning to find he had transmigrated to the Tang Dynasty and was bound to a banking System. He opened the most rudimentary bank around: Wu’s Money House. His first customer looking to deposit money turned out to be Shangguan Wan’er, sent by Wu Zetian. So what if she’s important? Even if the only female emperor in history showed up, he’d still charge a safekeeping fee. He’d take a cut from anyone who crossed his threshold!