未存执念不再深究
[wèi cún zhí niàn bù zài shēn jiū]
Translated as 'no more obsession, no more in-depth pursuit', it reflects a change from tenacious attitude or persistence about something to a state more let-go and peaceful. This implies a transition from holding onto certain things deeply to a point they no longer choose to explore them extensively. This also carries meanings like 'let go of the past and do not overthink anymore'.