Turkey's foreign ministry has summoned the Chinese ambassador in Ankara over what it says are human rights issues in China's Xinjiang Uygur Autonomous Region.
Tens of thousands of people who fled from the autonomous region live in Turkey. The mayor of the capital Ankara and an opposition party leader recently expressed solidarity with Uighurs on Twitter.
In response, the Chinese embassy took to Twitter on Tuesday to stress that Xinjiang is part of the People's Republic of China.
It said China strongly condemns any challenge to its sovereignty and territorial integrity.
Chinese Ambassador Liu Shaobin was summoned to the foreign ministry after the tweet. Local media reports the ministry expressed strong displeasure.
Western nations recently imposed sanctions on Chinese officials over the alleged abuses in the Xinjiang Uygur Autonomous Region. Beijing denies such abuses.
People who fled from the autonomous region to Turkey held a protest when Chinese Foreign Minister Wang Yi visited the country on March 25.