Why do you fool the director when you say Zhang is a farmer?

Not because of this, but in last year's issue of "New Defense Watch" program, Lao Zhang said that there is no fourth-generation aircraft in China, and the fourth-generation aircraft in China is a J 10 reform, and China has no plans to develop the fourth-generation aircraft. Everyone believed it at that time, but I didn't know that the J-20 was released this year. In fact, this title is a nickname for Zhang by netizens, and it is not derogatory.