By Brenda Goh BEIJING (Reuters) -Chinese President Xi Jinping used a visit to Shanghai on Tuesday to push for breakthroughs in artificial intelligence and underscore China’s leading role in the "Global South".

China is reportedly conducting a global diplomatic campaign to oppose President Donald Trump’s new trade deals with US allies. According to a Bloomberg report on Tuesday, Beijing is trying to reframe itself as a global rules-based order defender and make other countries see Washington as an unreliable trading partner.

The Treasury secretary said that the President Trump and Xi Jinping of China have a good relationship but that he was not aware of a call, which Mr. Trump had alluded to last week.