Actually, Bo Yan himself is a complete theorist. Before acting, he would design many different approaches, and then select the one he feels is most feasible for shooting.
But Xia Siyu is entirely from the Method School; her acting relies fully on her own experience. Like just now, when she thought about filming tomorrow, she already stopped seeing herself as an actress, instead immersing herself in the role of the constable in the play. He has never experienced this kind of state where one completely embodies their character.
How should I put it? Although in terms of acting, there is no right or wrong between Method School, experiential school, and performance school. However, the feeling of full emotional investment that Xia Siyu exudes really moves him.