Simply Say 2 Sentences

I don't understand quantum theory. The quantum communication described in the book is what I saw on the Internet. According to the information on the Internet, it is already possible to communicate 700 meters underwater. Based on this, it is not particularly unusual to achieve global coverage in 20 years. Moreover, I only said it was underwater communication, but I didn't say it was superluminal. And whether it was superluminal or not should be popularized by me in the book. At least most of the book friends should know it from me.

So, um, there is no need to worry about quantum communication. It is indeed only an encryption method at present. It really cannot exceed the speed of light because its carrier is blue-green laser. The attenuation of blue-green laser in water is relatively small, so it can reach 700 meters underwater.

It is indeed a bit exaggerated here. For the needs of the plot, the effectiveness of quantum communication is exaggerated.