yáng fān zhāo hún
lit. to raise a banner to summon the soul of a dying person (idiom)
fig. to try to revive what is obsolete or dead
扬
yáng
variant of 揚|扬[yang2]
幡
fān
banner
招
zhāo
to recruit
魂
hún
soul; spirit; immortal soul (that can be detached from the body)