Photo taken on June 24, 2019 shows an emergency rescue drill near Wusongkou Port in east China's Shanghai. An emergency rescue drill was held on Monday near Wusongkou Port in Shanghai. The drill simulated an emergency situation where a cargo ship had collided with a cruiser. (Photos: Xinhua)

Photo taken on June 24, 2019 shows an emergency rescue drill near Wusongkou Port in east China's Shanghai. An emergency rescue drill was held on Monday near Wusongkou Port in Shanghai. The drill simulated an emergency situation where a cargo ship had collided with a cruiser.

Photo taken on June 24, 2019 shows an emergency rescue drill near Wusongkou Port in east China's Shanghai. An emergency rescue drill was held on Monday near Wusongkou Port in Shanghai. The drill simulated an emergency situation where a cargo ship had collided with a cruiser.

Photo taken on June 24, 2019 shows an emergency rescue drill near Wusongkou Port in east China's Shanghai. An emergency rescue drill was held on Monday near Wusongkou Port in Shanghai. The drill simulated an emergency situation where a cargo ship had collided with a cruiser.

Photo taken on June 24, 2019 shows an emergency rescue drill near Wusongkou Port in east China's Shanghai. An emergency rescue drill was held on Monday near Wusongkou Port in Shanghai. The drill simulated an emergency situation where a cargo ship had collided with a cruiser.

Rescuers are seen during an emergency rescue drill near Wusongkou Port in east China's Shanghai, June 24, 2019. An emergency rescue drill was held on Monday near Wusongkou Port in Shanghai. The drill simulated an emergency situation where a cargo ship had collided with a cruiser.

Photo taken on June 24, 2019 shows an emergency rescue drill near Wusongkou Port in east China's Shanghai. An emergency rescue drill was held on Monday near Wusongkou Port in Shanghai. The drill simulated an emergency situation where a cargo ship had collided with a cruiser.