or 99 years, armored tanks have been a part of modern battlefields, shrugging off bullet fire and sending footsoldiers running for cover. The development of anti-tank weapons is almost as old, with people struggling to create new tactics and new weapons that can stop the lumbering warmachines. Countries especially want anti-tank weapons light enough to be carried by a single person into battle, but powerful enough to punch through modern tank armor. For years, DARPA’s been quietly working on a human-portable anti-tank railgun. And now, it appears, China’s working on one too.