無牽無掛

无牵无挂
qiānguà
(idiom) unburdened by obligations or attachments; carefree

CEDICT

to be free from worries; to be carefree

Wiktionary

沒有任何牽絆掛念

重編國語辭典

沒有任何牽絆掛念

維基詞典

Entry Composition