1 / 4   A man and wife who work together as welders for Chinese rail car manufacturer CRRC have become darlings of China’s Internet after pictures were posted of their efficient and loving relationship. /Chinanews Photo

2 / 4   Liu Chuan and his wife Gan Huarong met at work. For 23 years, they have worked in the same workshop, helping each other improve their soldering techniques. /Chinanews Photo

3 / 4   Both hard-working, Liu and Gan are certified International Welding Specialists and are trusted to work on demanding projects. The rail cars they have soldered have been exported around the world. /Chinanews Photo

4 / 4   Because welding can be a strenuous manual job, Liu often tends to his wife, wiping away her sweat and making sure she drinks enough water. /Chinanews Photo