He has been rooted on the railway track for more than 20 years, using a wrench as a pen and sleepers as paper to write about the iron-colored world in the mountains of Yunnan. Simple words, sincere stories. Daojiang has exhausted his talents and thinks he is a scholar. It is said that the Guizhou donkey is poor in skills and treats himself as an animal. I tried my best, just like human speech. The next one will be better.