CEDICT
to bury the hatchet; to become reconciled
Wiktionary
歸於和好。如:「經過一番對談溝通,雙方終於前嫌盡釋,言歸於好。」也作「言歸和好」、「言歸于好」。
重編國語辭典
It looks like they have made up again.
Source: Tatoeba
Now shake hands and make up.