Why did Liu Hulan say it was cloudy at the beginning of his text?

At the beginning of Liu Hulan's text, there are two reasons for the gloomy sky:

1. At the beginning of Liu Hulan, it is said that the gloomy sky describes the weather, not the environment.

2. At the beginning of Liu Hulan's text, what he said is to pave the way for the arrest of Liu Hulan below, which is eerie. Play up the atmosphere of Liu Hulan's arrest. Liu Hulan, female, Han nationality, formerly known as Liu Fulan, is from Yunzhouxi Village, Wenshui County, Luliang City, Shanxi Province. Famous revolutionary martyr, excellent party member.