Xiulote reflected for a long while before he finally understood: he had confused the Eastern crossbow with the European crossbow.
However, in the history of both the East and Europe, their designs were completely different, so much so that calling them both "crossbows" might not be accurate. They had also evolved towards different battlefield roles.
The Eastern crossbow was an enhanced upgrade of the long-range war bow, with a large frame, high tension, and long draw distance, using slender bolts nearly resembling arrows, equipped with a specialized sighting structure. Its range and power were both amplified versions of a bow. Many crossbows from the Han and Tang Dynasties could even be used as war bows once the bow arms were detached.