最后一句话说完分手最后一封信寄完离开
[zuì hòu yī jù huà shuō wán fēn shŏu zuì hòu yī fēng xìn jì wán lí kāi]
Means 'After the last conversation, breaking up; after sending the final letter, leaving.' It describes a decisive and clear separation, symbolizing a formal end of a relationship.