Crescent kick block
Crescent kicks can be used to swat incoming attacks aside. This is most commonly used as a defense against kicks. When the opponent shifts into crane stance, you can crescent kick their thigh to rotate their body, causing the opponent’s technique to miss its target.
[crescent kick block videos, fast and slow, from the front and side.]
Crescent kick blocks are also incredibly useful in the special case where your hands are restrained.