The train No. 5630 arrives at Tongzi Railway Station in Zunyi, southwest China's Guizhou Province, Feb. 25, 2026. The train No. 5629/5630 running through rugged mountains is a "slow train" linking Zunyi, southwest China's Guizhou Province, with southwest China's Chongqing Municipality. Since its operation 33 years ago, it has not only facilitated the daily travel and agricultural product transportation of the local people along the line with its low fares and the principle of stopping at every station, but also set up special areas for farmers in the carriages, making it convenient for vegetable farmers to store and sell their goods. This train has become a "mobile market" for the local people, and has also helped local products reach wider markets. (Photo by Wang Bo/Xinhua)

A villager aboard the train No. 5630 is pictured on Feb. 25, 2026. The train No. 5629/5630 running through rugged mountains is a "slow train" linking Zunyi, southwest China's Guizhou Province, with southwest China's Chongqing Municipality. Since its operation 33 years ago, it has not only facilitated the daily travel and agricultural product transportation of the local people along the line with its low fares and the principle of stopping at every station, but also set up special areas for farmers in the carriages, making it convenient for vegetable farmers to store and sell their goods. This train has become a "mobile market" for the local people, and has also helped local products reach wider markets. (Photo by Zhang Wei/Xinhua)

Railway staff members help villagers get off the train after the train No. 5630 arrived at Tongzi Railway Station in Zunyi, southwest China's Guizhou Province, Feb. 25, 2026. The train No. 5629/5630 running through rugged mountains is a "slow train" linking Zunyi, southwest China's Guizhou Province, with southwest China's Chongqing Municipality. Since its operation 33 years ago, it has not only facilitated the daily travel and agricultural product transportation of the local people along the line with its low fares and the principle of stopping at every station, but also set up special areas for farmers in the carriages, making it convenient for vegetable farmers to store and sell their goods. This train has become a "mobile market" for the local people, and has also helped local products reach wider markets. (Photo by Wang Bo/Xinhua)

The chief conductor talks with villagers on the train No. 5630, Feb. 25, 2026. The train No. 5629/5630 running through rugged mountains is a "slow train" linking Zunyi, southwest China's Guizhou Province, with southwest China's Chongqing Municipality. Since its operation 33 years ago, it has not only facilitated the daily travel and agricultural product transportation of the local people along the line with its low fares and the principle of stopping at every station, but also set up special areas for farmers in the carriages, making it convenient for vegetable farmers to store and sell their goods. This train has become a "mobile market" for the local people, and has also helped local products reach wider markets. (Photo by Zhang Wei/Xinhua)

Railway staff members help villagers get off the train after the train No. 5630 arrived at Tongzi Railway Station in Zunyi, southwest China's Guizhou Province, Feb. 25, 2026. The train No. 5629/5630 running through rugged mountains is a "slow train" linking Zunyi, southwest China's Guizhou Province, with southwest China's Chongqing Municipality. Since its operation 33 years ago, it has not only facilitated the daily travel and agricultural product transportation of the local people along the line with its low fares and the principle of stopping at every station, but also set up special areas for farmers in the carriages, making it convenient for vegetable farmers to store and sell their goods. This train has become a "mobile market" for the local people, and has also helped local products reach wider markets. (Photo by Zhang Wei/Xinhua)

Railway staff members help villagers unload vegetables after the train No. 5630 arrived at Tongzi Railway Station in Zunyi, southwest China's Guizhou Province, Feb. 25, 2026. The train No. 5629/5630 running through rugged mountains is a "slow train" linking Zunyi, southwest China's Guizhou Province, with southwest China's Chongqing Municipality. Since its operation 33 years ago, it has not only facilitated the daily travel and agricultural product transportation of the local people along the line with its low fares and the principle of stopping at every station, but also set up special areas for farmers in the carriages, making it convenient for vegetable farmers to store and sell their goods. This train has become a "mobile market" for the local people, and has also helped local products reach wider markets. (Photo by Zhang Guizhong/Xinhua)

The chief conductor talks with villagers on the train No. 5630, Feb. 25, 2026. The train No. 5629/5630 running through rugged mountains is a "slow train" linking Zunyi, southwest China's Guizhou Province, with southwest China's Chongqing Municipality. Since its operation 33 years ago, it has not only facilitated the daily travel and agricultural product transportation of the local people along the line with its low fares and the principle of stopping at every station, but also set up special areas for farmers in the carriages, making it convenient for vegetable farmers to store and sell their goods. This train has become a "mobile market" for the local people, and has also helped local products reach wider markets. (Photo by Zhang Guizhong/Xinhua)

Villagers communicate on the train No. 5630 on Feb. 25, 2026. The train No. 5629/5630 running through rugged mountains is a "slow train" linking Zunyi, southwest China's Guizhou Province, with southwest China's Chongqing Municipality. Since its operation 33 years ago, it has not only facilitated the daily travel and agricultural product transportation of the local people along the line with its low fares and the principle of stopping at every station, but also set up special areas for farmers in the carriages, making it convenient for vegetable farmers to store and sell their goods. This train has become a "mobile market" for the local people, and has also helped local products reach wider markets. (Photo by Zhang Guizhong/Xinhua)