Zhang Yuqi, a rail fan from Guiyang City, capital of southwest China's Guizhou Province, has collected more than 100 model train kits over the past seven years. /VCG Photo

The collection of the 27-year-old, a bullet train technician at a maintenance center in Guiyang, includes steam, diesel and electric locomotives as well as bullet trains. /VCG Photo

Zhang has even made window curtains and chimneys for his train models, winning netizens' hearts as the model train enthusiast shares his elaborate collections through short videos on social media periodically. /VCG Photo

Turning a hobby into a career, Zhang said he felt lucky and would offer all his strength to ensuring the safety of bullet trains. /VCG Photo