Children look at a wall paint at the newly-launched 76th street Station in New York, the United States, Jan. 4, 2016. New York City's Phase 1 of the Second Avenue Subway opened for service on Jan. 1, 2017. The nearly 2-mile segment, under the Upper East Side of the Manhattan, extends the Q line to three new stations at 72nd, 86th and 96th Streets at a cost of 4.5 billion U.S. dollars. (Xinhua/Wang Ying)