Swing My Blade to Gain Experience, and My Proficiency Attributes Double?

Chen Zhao transmigrated to a martial-arts world and discovered he had an outrageous panel: swing a blade and gain experience, max out proficiency and your attributes double.

Others spent ten years practicing before they could grasp a saber technique. He swung twice without thinking, and mastered it.

Others secluded themselves for three years to break through a bottleneck. He chopped at wooden posts all night, and broke through.

Others needed a lifetime to perfect their saber techniques. He... maxed out his proficiency, and his attributes doubled on the spot.

From then on, the martial world gained a new "saber maniac":

When pursued by his enemies, he swung his saber as he ran. Before long, his pursuers realized something was wrong: why was this guy getting stronger the farther he ran?

At the sect tournament, his opponent mocked his crude saber skills. Chen Zhao swung his saber ten thousand times on the spot, turning "crude" into "perfected."

The Demon Cult Leader challenged him to a duel atop the Forbidden City. Chen Zhao said, "Wait until I'm done chopping this pile of firewood."

Word around the martial world had it that Chen Zhao was a natural-born talent, a saber prodigy the likes of which appeared only once in a century.

Chen Zhao himself thought: Talent? I just waved my hand. My attributes doubled on their own.

While everyone else was still toiling away at their training, Chen Zhao had already swung his way into martial arts legend. But then one day, his saber technique, with its proficiency maxed out, split open a crack that should never have existed...