The title of the article is "Day", but the author praised the moth for putting out the fire in the main space. Please tell me the reason why the author wrote this.

The essay "Japan" praised their heroic dedication to the pursuit of light and heat through two examples: moths put out the fire, praised their father day after day, and expressed their determination to fight against it rather than drag out an ignoble existence in the cold and loneliness.

The author uses the symbolic techniques of supporting objects, moths and Kuafu to express his ambition, and regards these two images as symbols of pursuing light and preferring to devote themselves. War of Resistance against Japanese Aggression, China is very hard, and the whole nation suffers disasters and falls into bottomless darkness. In this essay, Ba Jin expressed both personal feelings and national feelings. His personal attitude towards life is also in these beautiful sentences.