Teng Jiliang, who is in charge of the generator car of the K7069 train, works on the train in northeast China's Heilongjiang Province, Jan. 10, 2020. Jan. 10 was the first day of 2020 China's Spring Festival travel rush. On the night of this day, passengers could hardly feel the freezing cold outside in the warm and bright carriages of the K7069 train, linking Suihua and China's "Arctic city" of Mohe in Heilongjiang Province. This could not happen without the work of the generator car staff. The 58-year-old Teng Jiliang is one of them. Through his 20 years' career, he had been working in the noisy environment on generator cars, which somehow impaired his hearing. The patrol task is also painstaking, as it is very cold in the car. But in Teng's mind, the generator car is a mobile power station and the heart of a train. To guarantee the supply of electricity and heating to all passengers, he has to be fully dedicated to work. (Xinhua/Zhang Tao)