
Passengers walk at Levent metro station of M6 Line in Istanbul, Turkey, on May 16, 2015. The newly opened Levent metro station of M6 Line is decorated with rainbow colors and becomes a beautiful scene of Istanbul metro. (Xinhua/He Canling)

Passengers walk at Levent metro station of M6 Line in Istanbul, Turkey, on May 16, 2015. The newly opened Levent metro station of M6 Line is decorated with rainbow colors and becomes a beautiful scene of Istanbul metro. (Xinhua/He Canling)