What do you mean by covering half your face with a wood blade?

Dramatic performance or role-playing, symbolism, social activities or ceremonies.

1. Drama performance or role-playing: Some people use wood blade to cover half their faces in drama performance or role-playing to create mysterious, dignified or unique images.

2. Symbolism: In some cultures, wood blade is usually regarded as a symbol of authority, strength or wisdom. Holding wood blade to cover half of your face represents an image of strength, wisdom or protection.

3. Social activities or ceremonies: In some social activities or ceremonies, it is a traditional custom or ceremony to cover half of one's face with wood blade, aiming at expressing some emotion or meaning.