Shen's smile never wavered, and instead of answering Hermione ducked as a rock the size of her head came flying through the air towards her, just narrowly missing colliding with her temple. She heard the whistling of Shen's staff coming down to incapacitate her, and fell to the ground on her stomach, rolling to the left and springing back up into her fighting stance. She felt out with the energy, the magic, and found the stone, broke it into chunks, and hurled them all at Shen without ever touching them.