旺仔牛奶, where 旺仔 is the brand name and 牛奶 is milk. The “milk-flavoured drink” part is translated accurately as it’s not pure milk, but has lots of added sugar. It’s well-known in China. Search the term on YouTube and you’ll find its ads.

旺仔 literally means a lucky guy or a guy who brings fortune. 旺 originally means hot or flaming and and the fortune meaning is derivative. 仔 in itself does mean kid, but here it’s more like a diminutive suffix to form a nickname.