Photo taken on Dec. 15, 2019 shows the scene of a group wedding at a construction site in Chengdu, capital of southwest China's Sichuan Province. The China Railway No.3 Engineering Group held a group wedding for six couples at a construction site in Chengdu on Sunday. (Xinhua/Liu Kun)

Photo taken on Dec. 15, 2019 shows the scene of a group wedding at a construction site in Chengdu, capital of southwest China's Sichuan Province. The China Railway No.3 Engineering Group held a group wedding for six couples at a construction site in Chengdu on Sunday. (Xinhua/Liu Kun)

Newly-wed couples read wedding vows during a group wedding at a construction site in Chengdu, capital of southwest China's Sichuan Province. The China Railway No.3 Engineering Group held a group wedding for six pairs of couples at a construction site in Chengdu on Sunday. (Xinhua/Liu Kun)

Photo taken on Dec. 15, 2019 shows the scene of a group wedding at a construction site in Chengdu, capital of southwest China's Sichuan Province. The China Railway No.3 Engineering Group held a group wedding for six couples at a construction site in Chengdu on Sunday. (Xinhua/Liu Kun)