lol they are no threat to the continental US. "In development" with a test date of like 2022. They will have a dozen by that date. We have nukes that have a CEP of 30 meters (B61-12). A near 100% prob of taking out an enemy silo. The Chinese thing has a ~60% chance of taking out a ground-based installation. https://www.revealnews.org/article/...ear-bomb-despite-us-pledge-to-reduce-arsenal/
http://www.globaltimes.cn/content/1030353.shtml don't be so sure....I wouldn't be surprised if their clandestine programs rival ours in secrecy.