Jacquard yarn achieves a perfect balance between "polyamide-grade skin-friendly" and "polyester-grade crispness" through the PA chip modification technology. By optimizing the molecular chain structure, the product possesses the moisture-wicking and quick-drying performance of absorbing water in 1 second and drying at a rate of 0.32g/h, as well as the dynamic humidity regulation capability of 4.3% moisture regain.