A lifetime of love and fate.
In Yishiqingyuan, shi refers to a lifetime, Qingyuan refers to the love fate between men and women, so Yishiqingyuan refers to the affection and fate for a lifetime.
Among the poems expressing love in a lifetime are: Love in a lifetime is like flying snow, nothing better than leaning on a sword and looking at the autumn moon. If life is just like the first time we met, why should the autumn wind draw a fan sadly? This feeling can be recalled later, but it was already at a loss. once having seen the best, the rest is not worthwhile looking.