A Canadian court has begun extradition hearing of senior Huawei executive Meng Wanzhou, who is wanted by the US over allegations of fraud.
Meng is the company's chief financial officer and eldest daughter of its founder Ren Zhengfei. Meng made no comment on entering the British Columbia Supreme Court in Vancouver.
In order to secure her freedom, Meng must convince a Canadian judge that the US charges - linked to alleged violations of US sanctions on Iran - would not stand up in Canada and are politically motivated.
The US alleges Meng lied to HSBC about Huawei's relationship with its Iran-based affiliate Skycom, putting the bank at risk of violating US sanctions against Tehran.
"Simply put, there is evidence she deceived HSBC in order to induce it to continue to provide banking services to Huawei," the US Justice Department said in court filings.
Meng denies the allegations. She has been out on bail, living in one of her two Vancouver mansions for the past year.
The Justice Department will say in arguing for her extradition that the US accusations against Meng would be considered a crime in Canada if they had occurred there. This is a key test known as double criminality.
Her lawyers will counter that the misrepresentations do not amount to fraud, but rather are an attempt by the United States to enforce its sanctions against Iran - which Canada has not matched.
China's foreign ministry on Monday maintained that Meng's extradition case was a "grave political incident" and urged Ottawa to release her.