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Nanning, 20 Jan (CNBC) -- As the Spring Festival draws nearer and closer, the density of passenger trains continues to increase, and railway departments in various localities have begun to carry out large-scale maintenance of equipment in the tube to ensure the safe operation of trains during the Spring Festival. Between the lofty mountains of Guangxi and Guizhou, there is such a group of railway workers who clean the catenary on the 183-meter-high bridge, and they are called the people who "paint rainbows" above the clouds.
![The front foot has just been withdrawn from the old home for the New Year, and the back foot is said that there are old people in the clan who have died and have to turn back, and the people in the countryside in the hometown are so helpless, and it is inevitable to run! After the end of the year from old age[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)