别人家的孩子永远比我棒
[bié rén jiā de hái zi yŏng yuăn bĭ wŏ bàng]
'Biesheng jia de haizi yongyuan bire wobang', or 'Other People's Kids Are Always Better Than Me'. Indicates a feeling common among children who feel overshadowed or less appreciated when their parents or guardians favor others' kids more than them.