Maneuvering three brush pens with one hand at the same time is nothing unusual for Chinese workers. All Chinese learned how to maneuver chopsticks to eat when they were only a few years old and many also learn caligraphy with brush pen at school. Painting with brush pen is a common technique for all Chinese workers, they require little training to perform any painting job. Model cars with a lot of color decorations are best made in China. No basic worker in other countries can do a better job.