What do you mean, misty and rainy, flying around?

Foggy-'The weather is foggy and the visibility is very low.

Rainy-rainy weather, light rain, low visibility,

Hong Fei-Hong Fei refers to Hongyan. In ancient times, there was a saying that Hongyan sent a book, which meant to send a letter.

Continuation-(want to) continue the previous fate,

When this sentence says the weather, it doesn't mean the weather, but should be understood as mood or opinion.

Whether you can send a letter to continue the frontier is as uncertain as the weather, but you have no confidence.