Starbucks, the international coffee chain giant, recently opened its first stores in China's Xinjiang Uygur Autonomous Region, drawing criticism from some US politicians.

The so-called "genocide" allegations concerning Xinjiang are a blatant lie, said Guo Jiakun, a Chinese Foreign Ministry spokesperson, in response to a media inquiry about the US Select Committee on China, which called Starbucks' decision to open stores in the region "morally bankrupt" over the allegations.

"This US group is known for vilifying China out of political motives and has absolutely no credibility to speak of," Guo said.

"Today's Xinjiang enjoys social stability, economic prosperity, ethnic unity and religious harmony," he added.

China will continue to expand high-standard opening up and provide more opportunities for foreign businesses to invest and thrive in the country, the spokesperson said.

Starbucks opened two stores in Xinjiang on Tuesday, marking its debut in the region and its latest expansion in China, its second-largest market after the United States.