Godly Cards System: The Strongest Shop Manager

Chu Fan brought the 'card merchant system' to Tang Dynasty. From then on, a restless world was born!
Why would the dragon kings of the four seas risk their lives to amass wealth?
Why did Tang San Zang ride Harley to the West?
Why did Li Shimin become history's number one wild beast summoner?
Why were the pigs in Chang An city screaming in the middle of the night?
All of this had to be traced back to a crappy little shop …