Liu Shuai aboards the train of Nairobi-Naivasha Standard Gauge Railway in Kenya, Jan. 15, 2020. Li Jing and Liu Shuai are both from central China''s Hunan Province. They fell in love during their work participating in the Mombasa-Nairobi-Naivasha Standard Gauge Railway project in Kenya. This year the couple returned to Hunan and visited each other''s families for the Chinese Lunar New Year. (Xinhua/Wang Teng)