真的要走是不会不说再见
[zhēn de yào zŏu shì bù huì bù shuō zài jiàn]
'Zhen De Yao Zou Shi Bui Shuo Zai Jian' means 'If truly leaving, there must be a goodbye'. It highlights sincerity; when someone leaves they would express it honestly and wouldn't vanish without farewell.