你脚踏俩只船不翻你技术好
[nĭ jiăo tà liăng zhĭ chuán bù fān nĭ jì shù hăo]
This translates to 'If you can balance between two boats without sinking, your skills are good'. Metaphorically, it suggests juggling between different interests (e.g., romantic relationships) successfully without getting into trouble.