It looks like China is testing its railgun on a naval ship.
However, we can presume China has already tested the railgun on land.
China has been researching and developing electromagnetic railgun technology for over 30 years ("since the mid-1980s").
The appearance of China's railgun should not be a surprise.
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Click on the four hotlinks (e.g. "conducting," "claimed," "reported," and "reported") in the article below to follow China's development of railgun technology.
Here’s What We Know About China’s Secretive Electromagnetic Railgun | Task & Purpose (February 2, 2018)
"The Chinese military has been
conducting electromagnetic research since the mid-1980s, and as recently as 2015, a Chinese defense firm
claimed to have achieved a major breakthrough on applying the technology for close-in weapons systems used for point defense. More recently, state-run media
reported in October 2017 that researchers at the PLA Naval University of Engineering (also located in the Hubei province) had developed the 'electromagnetic launch technologies' necessary to develop a combat-ready demonstrator.
The following December, Popular Science
reported that chief electromagnetics researcher Rear Adm. Ma Weiming gave a follow-up presentation on several recent breakthroughs that 'were key to building an operational railgun,' namely the high-durability barrel and the pulsed-power system required to achieve multi-shot salvos from the devastating weapon."
