人走茶凉

rén zǒu chá liáng

lit. when people leave, the tea cools (idiom)

fig. when sb is no longer in a position of power, others cease to care about him

rén

person; people

zǒu

to walk

chá

tea

liáng

the five Liang of the Sixteen Kingdoms, namely: Former Liang 前涼|前凉 (314-376), Later Liang 後涼|后凉 (386-403), Northern Liang 北涼|北凉 (398-439), Southern Liang 南涼|南凉[Nan2 Liang2] (397-414), Western Liang 西涼|西凉 (400-421)