On the morning of May 20^th, 2014, Professor Michael Ramsaur from Stanford University held a visual studio about the design and application of lighting in the Black Box Theater of the Central Academy of Drama. And Prof. Robert Reid from the Theatre Department of Concordia University, Canada gave a lecture on "The concept of 'trust' in drama or on stage" at the North Theater. Robert Reid explained that this kind of "trust" is based on the reaction between actors and audiences for which the audiences are able to give up their doubts when watching the play.