Over the past decade, I think the young Chinese have gradually dropped their illusion of the U.S. and begun to view it more objectively.
After reform and opening-up, to be more specific in the 1980s and 1990s, the Chinese people began to know more about the outside world. The prosperity of the west attracted the young people so much that all of a sudden everybody wanted to go abroad. At that time, we had a popular saying, “Moon of the west is even more beautiful than that of China.” Experiencing the sharp contrast between China and the west, many Chinese people became critical of China, perhaps in a cynical way.
However, when the Chinese embassy was bombed, many people began to think: is this the kind of democracy and human rights that we want to pursue?
JIM LEHRER: Yes, sir. But my question is: why would you think that it would not be an accident or a mistake? In other words, why would you think-- to repeat my question, why would you think that the United States would intentionally kill Chinese citizens in downtown Belgrade?
LI ZHAOXING: Ask your own people. Ask your own officials. Ask your own experts. If they ask themselves, seriously, honestly, do they really believe that this is simply a kind of mistake?
LI ZHAOXING: We attach more to facts, rather than words. No matter how eloquent one could be.
During the North Atlantic Treaty Organization (NATO) campaign against Serbia in 1999, an American F-117A stealth fighter was shot down. Some wreckage undoubtedly made it into Chinese hands. Slobodan Lekic and Dusan Stojanovic of the Associated Press (AP) reported on January 23:
"We believe the Chinese used those materials to gain an insight into secret stealth technologies ... and to reverse-engineer them," Domazet-Loso said in a telephone interview.
A senior Serbian military official confirmed that pieces of the wreckage were removed by souvenir collectors, and that some ended up "in the hands of foreign military attaches". 
Elizabeth Bumiller transmitted the US official pushback in the January 26 New York Times article titled "US Doubts '99 Jet Debris Gave China Stealth Edge":