dào fǎn tiān gāng
variant of 倒反天綱|倒反天纲[dao4 fan3 tian1 gang1]
倒
dào
to invert; to place upside down or frontside back
反
fǎn
contrary
天
tiān
day
罡
gāng
stars of the Big Dipper that constitute the tail of the dipper