Graphics shows launch procedure of China's first cargo spacecraft Tianzhou-1

Graphics shows the launch procedure of China's first cargo spacecraft Tianzhou-1 on April 20, 2017. (Xinhua/Ma Yan)

Graphics shows the launch procedure of China's first cargo spacecraft Tianzhou-1 on April 20, 2017. (Xinhua/Ma Yan)

Graphics shows the launch procedure of China's first cargo spacecraft Tianzhou-1 on April 20, 2017. (Xinhua/Ma Yan)

Graphics shows the launch procedure of China's first cargo spacecraft Tianzhou-1 on April 20, 2017. (Xinhua/Ma Yan)

Graphics shows the launch procedure of China's first cargo spacecraft Tianzhou-1 on April 20, 2017. (Xinhua/Ma Yan)

Graphics shows the launch procedure of China's first cargo spacecraft Tianzhou-1 on April 20, 2017. (Xinhua/Ma Yan)

Graphics shows the launch procedure of China's first cargo spacecraft Tianzhou-1 on April 20, 2017. (Xinhua/Ma Yan)

Graphics shows the launch procedure of China's first cargo spacecraft Tianzhou-1 on April 20, 2017. (Xinhua/Ma Yan)

Graphics shows the launch procedure of China's first cargo spacecraft Tianzhou-1 on April 20, 2017. (Xinhua/Ma Yan)

Graphics shows the launch procedure of China's first cargo spacecraft Tianzhou-1 on April 20, 2017. (Xinhua/Ma Yan)