The Nine Needles of Taisu Treat the Entire Galaxy

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Gu Changhan is very frail, or at least that's what the cat he adopted believes.

Until one day, Gu Changhan's fiance shows up and demands to break off their engagement.

Fiance: "The Chu family won't marry a man without a spirit form. It doesn't matter that your father once did us a favor, especially since I've found true love."

Gu Changhan coughs, looks at his fiance, and says softly, "A calligraphy brush or a chain blade. Pick one."

Fiance: "W-what?"

Gu Changhan smiles. "Pick the chain blade, and you'll become a yo-yo."

When Gu Changhan's cat wanders back from outside, it sees a scene that shakes its entire world: a tall, muscular man has become a yo-yo in Gu Changhan's hands.

After he's done tossing the yo-yo, Gu Changhan rubs his chest and frowns. "Actually, acupuncture is an option too."