Passengers get off a train in Harbin Railway Station in Harbin, northeast China's Heilongjiang Province, Feb. 6, 2022.

The railway station saw an increase of passenger trips as this year's Spring Festival holiday comes to an end. (Xinhua/Zhang Tao)

Passengers walk to board a train in Harbin Railway Station in Harbin, northeast China's Heilongjiang Province, Feb. 6, 2022.

The railway station saw an increase of passenger trips as this year's Spring Festival holiday comes to an end. (Xinhua/Zhang Tao)

Passengers have their tickets checked before boarding trains in Harbin Railway Station in Harbin, northeast China's Heilongjiang Province, Feb. 6, 2022.

The railway station saw an increase of passenger trips as this year's Spring Festival holiday comes to an end. (Xinhua/Zhang Tao)

Passengers wait to board trains in Harbin Railway Station in Harbin, northeast China's Heilongjiang Province, Feb. 6, 2022.

The railway station saw an increase of passenger trips as this year's Spring Festival holiday comes to an end. (Xinhua/Zhang Tao)

Aerial photo taken on Feb. 6, 2022 shows vehicles streaming through an expressway tollgate in Shijiazhuang, north China's Hebei Province.

China on Sunday witnessed an increase of passenger trips as this year's Spring Festival holiday comes to an end. (Photo by Xu Jianyuan/Xinhua)

Passengers walk in Shanghai Hongqiao Railway Station in east China's Shanghai, Feb. 6, 2022.

China on Sunday witnessed an increase of passenger trips as this year's Spring Festival holiday comes to an end. (Xinhua/Wang Xiang)

Passengers have their ID cards checked before entering Shanghai Hongqiao Railway Station in east China's Shanghai, Feb. 6, 2022.

China on Sunday witnessed an increase of passenger trips as this year's Spring Festival holiday comes to an end. (Xinhua/Wang Xiang)

Passengers wait to board trains in Shanghai Hongqiao Railway Station in east China's Shanghai, Feb. 6, 2022.

China on Sunday witnessed an increase of passenger trips as this year's Spring Festival holiday comes to an end. (Xinhua/Wang Xiang)