This is Rory McIlroy's iron swing, which is called the bible of swings. It is a perfect swing that does not show any swing errors even when analyzed with an analysis program. The takeback is low and long, and the section where the club face faces the ball is long. During the downswing, the club descends vertically at the same time as the pelvis rotates without changing the spine angle. If the spine angle is extended during the downswing, the space for both hands to pass becomes narrow, and the club path deviates from the normal orbit.