不挽留不牵手
[bù wăn liú bù qiān shŏu]
Expresses a hands-off attitude toward love; choosing neither to forcefully hold on to a partner (不挽留 - do not try to stop someone from leaving) nor pursue deeper relationships (不牵手 - do not hold hands symbolizes a refusal to take the relationship further). This reflects a passive approach towards relationships, possibly after facing certain emotional traumas.