
People witness the first trial run of Bangladesh's metro rail service in Dhaka, Bangladesh, on Aug. 29, 2021. Bangladesh's first metro rail in the capital Dhaka made the trial run Sunday on a section of the 20.1-km project, known as Mass Rapid Transit Line-6 (MRT 6). Photo: Xinhua

Aerial photo taken on Aug. 29, 2021 shows a scene from the first trial run of Bangladesh's metro rail service in Dhaka, Bangladesh. Bangladesh's first metro rail in the capital Dhaka made the trial run Sunday on a section of the 20.1-km project, known as Mass Rapid Transit Line-6 (MRT 6). Photo: Xinhua

Bangladeshi Road Transport Minister Obaidul Quader (2nd R) inspects the train designated to perform the first trial run of Bangladesh's metro rail service in Dhaka, Bangladesh, on Aug. 29, 2021. Bangladesh's first metro rail in the capital Dhaka made the trial run Sunday on a section of the 20.1-km project, known as Mass Rapid Transit Line-6 (MRT 6). Photo: Xinhua

Photo taken on Aug. 29, 2021 shows a scene from the first trial run of Bangladesh's metro rail service in Dhaka, Bangladesh. Bangladesh's first metro rail in the capital Dhaka made the trial run Sunday on a section of the 20.1-km project, known as Mass Rapid Transit Line-6 (MRT 6). Photo: Xinhua

Bangladeshi Road Transport Minister Obaidul Quader (3rd R, Front) flags off the first trial run of Bangladesh's metro rail service in Dhaka, Bangladesh, on Aug. 29, 2021. Bangladesh's first metro rail in the capital Dhaka made the trial run Sunday on a section of the 20.1-km project, known as Mass Rapid Transit Line-6 (MRT 6). Photo: Xinhua

Aerial photo taken on Aug. 29, 2021 shows a scene from the first trial run of Bangladesh's metro rail service in Dhaka, Bangladesh. Bangladesh's first metro rail in the capital Dhaka made the trial run Sunday on a section of the 20.1-km project, known as Mass Rapid Transit Line-6 (MRT 6). Photo: Xinhua

People witness the first trial run of Bangladesh's metro rail service in Dhaka, Bangladesh, on Aug. 29, 2021. Bangladesh's first metro rail in the capital Dhaka made the trial run Sunday on a section of the 20.1-km project, known as Mass Rapid Transit Line-6 (MRT 6). Photo: Xinhua