The dance Guanyin with a Thousand Hands is considered to be the most touching program in the Spring Festival Evening in 2005. The actors brought the audience with graceful dances and beautiful shapes.

Actors perform complex dance movements mainly by the adjustment of the nervous system. Reflex is a regular response of people or animals to various external and internal stimuli through the nervous system. The basic way of nerve regulation is reflex, and the types of reflex are unconditional reflex and conditioned reflex.

So the answer is: nervous system; Reflection.