Eagle sauce is just bragging?Then what did I develop

In 2010, Lin Yang followed the Huaxia scientific research team to the United States to participate in a summit scientific research conference.
At the meeting, Professor Corey, a top weapon expert in the United States, declared that electromagnetic guns will become the mainstream of warfare in the future, and the United States has already started research and development and made good progress!
The Chinese scientists kept it in mind.
After returning to China, Lin Yang began to devote himself to the research and development of electromagnetic guns, and succeeded three years later!
Just as the summit meeting was held again this year, Professor Corey said with a smile: "By the way, there is one thing that lied to you back then, that is, the electromagnetic gun can't be made at all. I'm just bragging. You Huaxia won't take it seriously. right?"
Huaxia scientists and Lin Yang were stunned!
"Then what the fuck did I make out of it?"
A few days later, the United States launched the second manned moon landing.
The spacecraft was flying smoothly in the universe, and suddenly a ray of light was shot from the earth, instantly destroying the spacecraft that landed on the moon.
The United States was furious: "I'm just bragging..