China’s ‘Underground Steel Great Wall’ capable of defeating hypersonic weapon attacks: academician

By Deng Xiaoci and Liu Xuanzun Source:Global Times Published: 2019/1/13

"It is highly possible that US weapons with low-yield nuclear warheads are bunker-busters, with a higher surgical strike capability that may cause larger damage, military experts previously noted, warning that China should stay alert and upgrade its own national defense."

http://www.globaltimes.cn/content/1135576.shtml