好酒沉瓮底

hǎo jiǔ chén wèng dǐ

lit. the best wine is at the bottom of the jug (idiom)

fig. the best is saved for last

hǎo

good

jiǔ

wine (esp. rice wine)

chén

variant of 沉[chen2]

wèng

variant of 甕|瓮[weng4]

bottom; base