Chinese Foreign Ministry spokesman Lu Kang told reporters during a regular press conference in Beijing on Thursday that this was the first time the Americans had mentioned the word "evidence" in relation to anything to do with Huawei.
He was responding to a questioner who also pointed out that US Secretary of State Mike Pompeo had said American companies complied with US laws when they co-operated with the government, but it was different in China. Pompeo was cited as saying Huawei was an instrument of the Chinese Government and the two were deeply connected.
Kang said in response: "For quite a while, in order to oppress Huawei, the US has been wracking its brains to make up stories in an attempt to convince people from the US and other countries that Huawei poses a security risk.
He could not resist a dig at the US, citing the NSA program PRISM which was exposed by whistleblower Edward Snowden as being used for blanket surveillance of all Americans.
"A vivid contrast to it is the PRISM incident," Kang said. "The facts are more than clear as to what role the US Government played and whether it differentiated its targets based on ideology.
"There is no shortage of evidence for the international community to define the behaviour of the US."
The company has been facing major issues after Google announced on 20 May that it was cutting off the company's access to future updates of Android and the Google Play Store.
A day later, the US Commerce Department eased some of the restrictions, allowing Huawei to maintain and update existing networks and handsets for 90 days.
US President Donald Trump has also put in place a ban on the use of equipment from Huawei and its fellow Chinese firm, ZTE, within the US.