初遇如花别去如雪
[chū yù rú huā bié qù rú xuĕ]
It conveys a bittersweet feeling about the first encounter and farewell. 'Encounter like a flower': beautiful and full of vitality; while the 'departure is like snow', which is beautiful yet sad because flowers often represent the blooming and lively springtime, whereas snow implies a coldness after parting with someone.