毛爷爷快到兜里来
[máo yé yé kuài dào dōu lĭ lái]
A playful expression meaning 'Grandpa Mao Come Quickly into My Pocket.' Grandpa Mao likely refers to Mao Zedong, whose image appears on Renminbi notes, making this phrase about wishing for money in a lighthearted way.