China is testing a new large-caliber naval artillery system, signaling a return to traditional heavy weaponry in an era dominated by missiles and drones.

In an era of naval warfare defined by air superiority, precision missiles and autonomous drones, China’s navy appears to be bringing back the “big guns”. A new naval gun system is said to be in development which takes 155mm, or 6.1-inch, artillery shells. That would make it the largest of its kind in the world today. The naval gun has recently been spotted undergoing sea-based performance testing from an experimental warship, which suggests it is moving closer to being deployed by the People’s.....