When playing Dulu, hold the tube upright, the index finger and ring finger of the right hand press the second and first holes, and the thumb and ring finger of the left hand press the back hole and the third hole.

Dulu can emit e, g, b, d1, e1 sound sequences, using overblowing, more overtones, and a range of up to three octaves.

Dulu is good at playing legato, pause, arpeggio and vibrato. But the volume is low. The pronunciation is soft, graceful, and lyrical. The timbre in the bass region is round and rich; the timbre in the midrange region is clear and distant, resembling a voice from a valley; Strong expressiveness.