Chinese Ambassador to the U.S. Cui Tiankai criticized Sen. Tom Cotton Tom Bryant CottonLoeffler calls for hearing in wake of Netflix's 'Cuties' Health care in the crosshairs with new Trump Supreme Court list Cruz says he wouldn't accept Supreme Court nomination MORE (R-Ark.) on Sunday for suggesting the coronavirus could have been created in a Chinese biological warfare lab.

“I think it’s true that a lot is still unknown and our scientists, Chinese scientists, American scientists, scientists of other countries, are doing their best to learn more about the virus, but it’s very harmful, it’s very dangerous, to stir up suspicion, rumors and spread them among the people,” he said.

“For one thing, this will create panic,” Cui said, adding that it could also foment xenophobia and racist discrimination.

“There are all kinds of speculation and rumors,” he added, noting that there were also conspiracy theories about the virus originating in the United States. “How can we believe all these crazy things?”

NEW: @AmbCuiTiankai dismisses #coronavirus conspiracy theories pushed by @SenTomCotton that it's being used as biological warfare as "absolutely crazy." WATCH --> pic.twitter.com/26D4r67Kj9 — Face The Nation (@FaceTheNation) February 9, 2020

Cui also defended how the Chinese government had handled the case of Li Wenliang, the Chinese doctor who died last week after warning about the virus weeks before the government did, with the government eventually forcing him to retract his warnings.

“He was a doctor, and a doctor could be alarmed by some individual cases, but as for the government, you have to base your decisions on more solid evidence and signs,” Cui said. "I don't know who tried to silence him, but there was certainly disagreement ... on what exactly the virus is, how it is affecting people.”

"I don't know who tried to silence him, but there was certainly disagreement...on what exactly the virus, is how it is affecting people," @AmbCuiTiankai says in the wake of the death of Dr. Li Wenliang who first made public warnings of the #Coronavirus weeks before the government pic.twitter.com/CaQLoz1gOi — Face The Nation (@FaceTheNation) February 9, 2020

Asked about Chen Qiushi, a citizen journalist who has covered the outbreak in China and has since disappeared, Cui responded "I have never heard of this guy, so I don’t have any information to share with you."