Xiamen's subway line 1 began operations on Dec 31, the last day of the year, taking the city into the metro era.

Subway line 1 in the port city extends about 30.3 kilometers with 24 stations. It takes 52 minutes to run the whole journey at a maximum charge of seven yuan ($1) one-way.

As it crosses the sea for about two kilometers offering beautiful views to passengers, the subway line is praised as the most beautiful in China.

Xiamen's subway line 1 started operations on Dec 31, 2017. [Photo/Xinhua]