Why does firewood represent seclusion in ancient poetry?

Regarding the image of Yuqiao, the Tang poems described a lot to readers, which also laid the foundation for Yuqiao's life. In the eyes of the Tang people, some fishermen represent hermits, some generalize mountain people or civilians, some are semi-ideal and semi-yearning immortals, and some may be Taoist priests and sages. The image of fishing firewood constructed by reality and romance in Tang poetry has a great influence on later generations.