C1183 Two Big Problems

"It's not hard to turn invisible. We're dealing with the upper levels of the hull. Reflect the waves from the sea into the sky and set up the absorption materials. Reduce the radar's reflection and return waves to achieve the goal of invisibility " Qin Guan said.

Qin Guan did not care what they thought. The current Qin Guan was only used to describe a basic fact