用旺仔牛奶干杯
[yòng wàng zĭ niú năi gān bēi]
Translates as 'Cheers with Wantai Milk', where '旺仔' (wàngzǎi) is a popular milk brand beloved by children. It creates a fun, playful image, as if wishing everyone could enjoy something pure and delightful like drinking Wantai milk together in joyous moments.