Face-changing training and teaching, where can I learn authentic technology?

The well-known Sichuan Opera Face-changing School of Bashu Culture in China is where my classmates learn face-changing techniques. It's really great. There are often some performances. Teachers are conscientious and responsible in teaching and provide accommodation. One night, the classmate forgot to cover the quilt, and the teacher got up in the middle of the night to cover him. Very warm-hearted It is really the kindness of the teacher, who has taught us many skills and nurtured us for a hundred years. Their face-changing teacher really used candles to illuminate others and burn himself to praise Bashu.