A notorious Peking University professor has incited outrage yet again after referring to the terrorists who carried out the September 11 attacks on the United States as “heroes.”

“On the morning of November 27, I visited the former World Trade Center site and remembered 9/11 again,” wrote Kong Qingdong on Weibo earlier this week. “I remembered the first time I brought Jin Yong’s novel into class this semester, which also happened to be on September 11.”

“I asked my students a question: ‘Are the heroes of 9/11 not knights?'”

Jin Yong (Louis Cha) was the beloved author of a number of extremely popular martial arts novels that followed brave and chivalrous heroes who fight to overcome obstacles and evil in ancient China.

For comparing those who flew planes into the World Trade Center with gallant characters from The Legend of the Condor Heroes, some have called for Kong’s US visa to be revoked.

The US should deny visa to this venomously anti-American hack. The “heroes” he refers to are the terrorists who blew up the World Trade Center. #911 @USA_China_Talk pic.twitter.com/pWLIYVzd8A — Yaxue Cao (@YaxueCao) December 10, 2019

An outspoken professor of Chinese studies and 73rd generation descendant of Confucius, Kong is no stranger to controversy. Perhaps his most infamous remarks came on a 2012 news program when he called Hongkongers “bastards, running dogs of the British, and thieves” in response to a viral scuffle on the MTR between mainland tourists and local passengers.

A month prior to that whole kerfuffle, Kong awarded Russia’s Vladimir Putin with the Confucius Peace Prize, China’s unofficial answer to the Nobel Peace Prize. Putin did not attend the ceremony, so Kong was forced to give the actual award to a pair of blonde Russian babes.

By the way, the Chinese government itself recently referenced 9/11 with Foreign Ministry spokeswoman Hua Chunying declaring last week that the US “should not forget the pain” of the September 11 attacks after the House of Representatives passed a bill to sanction the Chinese officials who are behind the Muslim detention camps in Xinjiang.