Fresh fighting broke out early Saturday in northeastern Burma after
days of clashes between government troops and ethnic rebels.
Thousands of people have fled to the border town of Nansan in China's Yunnan province this month to escape clashes in Kokang in Burma's Shan state, following the deployment of government troops in the area.
The UN High Commissioner for Refugees says up to 30,000 people have fled into China.
The Chinese Red Cross told the Chinese Daily newspaper that one person was killed and several were injured Friday when someone threw a bomb across the Chinese border.
China has called on Burma to maintain stability in the border region and urged more measures to protect the security and legal rights of Chinese citizens there.
Some information for this report was provided by AP and Reuters.