You use dicey discipline.
Nothing is off limits in the pursuit of perfection. Chua admitted that when one of her daughters hadn't mastered a challenging piano piece, she hauled her child's dollhouse to the car and threatened to donate it to the Salvation Army, piece by piece, until the song was mastered. As a result, her kid stayed glued to the piano for hours, forgoing food, water and bathroom breaks to get the job done. It's a bit extreme, but tiger parents justify their means by attributing them to the eventual success of the children.