What’s inside Long March 7 carrier rockets assembly building?

For more: Wenchang Spacecraft Launch Site in south China’s Hainan Province undertakes important missions to complete China’s Tiangong Space Station. Before the launch mission of the Tianzhou-4 unmanned cargo spacecraft, CGTN reporter Zheng Yibing visited the carrier rocket’s assembly and test building. Check it out. Subscribe to us on YouTube: Download our APP on Apple Store (iOS): Download our APP on Google Play (Android):