Speaking on Monday, Robert Strayer, the US Deputy Assistant Secretary for Cyber and International Communications and Information Policy, said that any deployment of Huawei's 5G technology is "a risk" and the US will "have to reassess" how it is "interconnected and share information".
He said the U.S. would have to reassess its intelligence-sharing arrangements with any country which allowed such a firm to become involved in building its network.
The US has delivered a fresh warning that there is no safe level of involvement by Chinese tech giant Huawei in the 5G networks of Western powers.
Xiaoming accepted the concerns were understandable but urged countries and vendors to work together to solve and mitigate any threat.
The past week witnessed the start of a heated debate in Britain over what decision to make with regard to the development of the 5G network in the country.
"Huawei has had a good track record on security over the years, having taken the initiative to invest in a Cyber Security Evaluation Center which employs an all-British monitoring system", the ambassador said.
The development follows months of uncertainty about the future role of the company in the United Kingdom following allegations, made mainly by the USA, that its equipment is a risk to national security.
Her decision came despite the disapproval of some intelligence chiefs and the country's defense and foreign secretaries, Gavin Williamson and Jeremy Hunt, who both fear serious impact on Anglo-American relations.
Members of the Cabinet were expected to be summoned for interviews as part of the formal inquiry headed by Cabinet Secretary and National Security Adviser Sir Mark Sedwill.
British government officials say under the provisional plan Huawei's participation would be restricted to building transmission equipment, including rooftop aerials and base stations, and wouldn't involve anything to do with core infrastructure, where billing and customer details are stored.
All five, however, have either publicly denied being the guilty party or let it be known through aides that they were not responsible.