恢恢有餘

lit. to have an abundance of space / room to maneuver (idiom)

to restore / to recover / great

vast / extensive (literary)

to have; there is / (bound form) having; with; -ful; -ed; -al (as in 有意[you3 yi4] intentional)

to have an abundance

extra / surplus / remaining / remainder after division / (following numerical value) or more / in excess of (some number) / residue (math.) / after / I / me

surname Yu

variant of 餘|余[yu2], remainder