相遇总是措手不及分离却是蓄谋已久
[xiāng yù zŏng shì cuò shŏu bù jí fēn lí què shì xù móu yĭ jiŭ]
It translates into 'Meetings Are Always Unprepared While Goodbyes Are Long Plotted'. The sentiment highlights how unexpected encounters tend to be whereas farewells are often drawn out and anticipated, hinting at a poignant realization of life’s events.