别入戏太深免得无法自拔
[bié rù xì tài shēn miăn dé wú fă zì bá]
The meaning here is 'Do Not Get Too Engaged Or You Might Be Unwilling To Quit'. It carries a warning note about falling too deeply into anything—be it a drama, situation, feeling—which risks becoming difficult to extricate oneself from without significant impact.