Signing Contracts Every Day, I Can't Stop at All

A modern person who traveled through time and became a diplomat in the late Qing Dynasty was forced to be bound to the "treaty return system" - the more unequal the treaty signed, the greater the personal rewards. When he became the invisible richest man by betraying the country's destiny, he discovered that the real purpose of the system was to force him to be the one to end all unequal treaties.