Ye Chen, a top surgeon, was forced to resign due to a medical accident. He packed up his belongings in frustration, only to discover that the ancestral Hearthstone legend was a real card, and the card sealed the horned dragon. He awakens the card doctor system and can get feedback and improve himself by treating card creatures. The world changed, and card creatures merged with reality. Ye Chen relied on the system to materialize the horned dragon card, heal his injuries, and then embarked on the path of urban card cultivation. He resigned from the hospital and opened a card medical clinic. No one cared about him at first, until he cured the epic card creature that ran rampant in the daughter of a powerful man and became famous. While he collects rare cards, he fights against the evil forces who covet the horned dragon. Cool path: Rely on medical knowledge and unique understanding of cards to play the role of pig and eat tiger, use healing ability to conquer powerful cards, establish card medical center power, and protect the city. Core selling point: The doctor profession is combined with card training, and the horned dragon is a unique setting as the core card. Target readers: Readers who enjoy cool writing and like urban fantasy and system flow. Value core: protection. In the end of the story line, he reveals the truth about the medical accident, takes revenge on the framer, and uses the card hospital to protect the balance of the city.