饫甘餍肥

yù gān yàn féi

to live off the fat of the land (idiom)

to have a luxurious lifestyle

饫

yù

full (as of eating)

甘

gān

abbr. for Gansu Province 甘肅省|甘肃省[Gan1 su4 Sheng3]

餍

yàn

to eat to the full

肥

féi

fat