Speaking at a Foreign Ministry briefing in Beijing on Monday, spokesperson Guo Jiakun dismissed reports linking Chinese intelligence to the controversy.

"The narrative about so-called Chinese spies is entirely baseless, nothing but groundless slander and smears," spokesperson Guo Jiakun said.

The response followed reports that Huang had been targeted by a foreign intelligence operation involving a woman suspected by US officials of having links to Chinese intelligence.

Huang acknowledged being 'unfaithful' after reports emerged about his relationship with the businesswoman.

US media identified the woman as 'Alice Huang', who is not related to the Nvidia CEO. The reports alleged that she had passed sensitive intelligence and assisted in smuggling artificial intelligence chips.

Nvidia confirmed that it was examining the allegations but said its board had no reason to believe that US national security information or company secrets had been compromised.

US President Donald Trump also commented on the controversy, saying he had not discussed the allegations with Huang.

Trump defended the Nvidia executive as an 'honourable guy' and suggested that he 'probably has an excuse'.

During the same briefing, Guo addressed the ongoing conflict between the United States and Iran, following reports that Washington had sought Beijing's assistance in ending the fighting.

China called for negotiations and warned against prolonging the conflict.

"The protracted conflict between the US and Iran is not in the common interest of the parties involved or the international community. All parties concerned should choose the path of peace, resolve disputes through dialogue and negotiation, and promote the early restoration of peace and tranquillity in the Middle East and the Gulf region," he said.

Guo also announced plans for a Pakistani astronaut to become the first foreign national to visit China's space station as part of a Chinese crewed mission.

The planned mission comes as China and Pakistan mark 75 years of diplomatic relations.

On relations with Cuba, Guo welcomed an upcoming visit by Cuban Foreign Minister Bruno Rodriguez Parrilla.

He described China and Cuba as 'good friends, good comrades and good brothers' and expressed hopes of strengthening relations between the two countries.