风雨无阻 (fēng yǔ wú zǔ): regardless of weather conditions; rain, hail or shine

No matter the weather, we will persist in training regardless of wind or rain.

He runs every morning regardless of the weather, and he is very healthy.

The courier delivers goods to customers regardless of wind or rain, which is very hard work.

Even if it's windy and rainy, I will still attend this meeting.

They loved each other for ten years regardless of hardships, and finally got married.