把角色演到失忆
[bă jiăo sè yăn dào shī yì]
'Performing the role to the point of amnesia' can mean several things. It might suggest fully immersing oneself into character playing to such an extent that personal identity blurs or temporarily disappears. Alternatively, it can indicate escaping from real-world worries by delving entirely into a different persona through drama or other activities.