Chinese President Hu Jintao has urged the Dalai Lama and his supporters to show "sincerity" and blamed them for unrest across Tibet and trying to wreck the Beijing Olympics.

Hu, speaking after a summit with Japanese Prime Minister Yasuo Fukuda, said that China's recent talks with representatives of Tibet's exiled Buddhist leader, the Dalai Lama, had been "conscientious and serious" and that the two sides had agreed to continue contacts.

But Hu also blamed the Dalai's supporters for recent unrest across Tibet, saying they were trying to wreck Beijing's showcase Olympic Games in August.

"We hope that the Dalai's side will use its actions to show its sincerity," Hu told a press conference in Tokyo, urging the Dalai Lama's side to stop the trouble-making and efforts to split Tibet from China.

The Dalai Lama has said he wants autonomy, not full independence, for Tibet, supports the Beijing Games and rejects violence. China says he is not sincere.

Earlier Wednesday, a Chinese state newspaper said the Dalai Lama was trying to blacken its name by internationalising the Tibet problem.

Japan's Fukuda told the same news conference he appreciated China's decision to hold talks with Tibet, and called for the dialogue to continue.

"I rate highly the president's decision to have a dialogue and the fact that talks were held," Fukuda said.

Last month, Fukuda told China's visiting foreign minister Yang Jiechi that he must face the fact that Tibet had become an international problem, contradicting the oft-stated Chinese view that it is a domestic dispute.