Passengers get tickets from self-service machines at West Kowloon Station in Hong Kong, south China, Sept. 23, 2019. Monday marked the first anniversary of the launch of Hong Kong section of Guangzhou-Shenzhen-Hong Kong Express Rail Link. (Photo: Xinhua)

Passengers depart from the West Kowloon Station in Hong Kong, south China, Sept. 23, 2019. Monday marked the first anniversary of the launch of Hong Kong section of Guangzhou-Shenzhen-Hong Kong Express Rail Link.

Photo taken on Sept. 23, 2019 shows the West Kowloon Station in Hong Kong, south China. Monday marked the first anniversary of the launch of Hong Kong section of Guangzhou-Shenzhen-Hong Kong Express Rail Link.

Passengers depart from West Kowloon Station in Hong Kong, south China, Sept. 23, 2019. Monday marked the first anniversary of the launch of Hong Kong section of Guangzhou-Shenzhen-Hong Kong Express Rail Link.

Passengers get tickets from self-service machines at West Kowloon Station in Hong Kong, south China, Sept. 23, 2019. Monday marked the first anniversary of the launch of Hong Kong section of Guangzhou-Shenzhen-Hong Kong Express Rail Link.