Describing an achievement, deed, or undertaking that is grand, heroic, or unparalleled.

他为国家立下了补天浴日的功勋，受到了人民的爱戴。

Referring to the ancient legends of Nüwa mending the heavens and Xihe bathing the sun.

“补天浴日”这个成语源自于上古时期女娲和羲和的神话故事。