後顧之憂

fears of trouble in the rear (idiom); family worries (obstructing freedom of action) / worries about the future consequences / often in negative expressions, meaning "no worries about anything"

back / behind / rear / afterwards / after / later / post-

surname Gu

to look after / to take into consideration / to attend to

(possessive particle, literary equivalent of 的[de5]) / him / her / it

to worry / to concern oneself with / worried / anxiety / sorrow / (literary) to observe mourning