我想与你并肩那你要快长高
[wŏ xiăng yŭ nĭ bìng jiān nèi nĭ yào kuài zhăng gāo]
Translated loosely as 'If I want to stand side by side with you, then you need to grow up faster'. There’s a playful tone in the statement, possibly wishing for both personal and mutual growth.