Two young men are lucky enough to work with something they love -- trains -- in Guiyang, Southwest China's Guizhou province.

Zhang Yuqi and Liu Yuqi, who have no blood relationship, are connected by their shared hobby - collecting model trains -- and have earned the nickname "high-speed train brothers".

As their parents were employed in the train industry, they grew up with the beautiful sound of train whistles and now work for the Guiyang North Railway Station.

At the beginning, Liu Yuqi worked as an intern in Zhang Yuqi's team and they learned job techniques together. After getting to know each other better, they found that they both like collecting model trains in their spare time.

Now the two of them carefully check and repair trains to ensure the safe operation of bullet trains at work and share their experiences with model train collections after work.

Currently, these two have collected more than 200 model trains.