idiom · a time of beautiful scenery, delightful weather, or a happy period of life

如此花朝月夕，我们应当倍加珍惜这美好的时光。

idiom · the Birthday of the Flowers on lunar February 15th and the Mid-Autumn Festival on lunar August 15th

每逢花朝月夕，文人墨客便聚在一起吟诗作赋。