Translation question
“吾入学剑，习练功纯，自能入妙，神手其神，翻天兮惊飞鸟，滚地兮不沾尘。一击之间，恍若轻风不见剑，万变之中，但见剑光不见人。”
"If your sword practice is skilled, it will enter the realm of the subtle, and the sword will follow the changes of your heart. Strike through the air, and you will startle the passing birds. Strike near the ground, and no dust will collect on your blade. As you attack, they will feel a light breeze, but will not see the sword. As your movements change, they will see the flash of the sword, but will not see you."
"If your sword practice is skilled, it will enter the realm of the subtle, and the sword will follow the changes of your heart. Strike through the air, and you will startle the passing birds. Strike near the ground, and no dust will collect on your blade. As you attack, they will feel a light breeze, but will not see the sword. As your movements change, they will see the flash of the sword, but will not see you."