What works are worth mentioning in Desai Siwei's "Paying tribute to sanitation workers with lenses" public welfare photography exhibition?

It should be said that the works of this photography exhibition are of high quality in general, both the photography itself and the meaning expressed by the works. Personally, I am very impressed with the work Lao Zhu under the Night, which can arouse the audience's attention to sanitation workers and change many views on sanitation workers.