"We strongly urge the Japanese government to pay close regard to China's sincere concern and to obey the principles established in three key political documents between China and Japan especially the Sino-Japanese Joint Statement," Jiang said.

    Lee's words and deeds in past decades marked him as a secessionist, said Jiang, urging Japan not to "provide a political arena for pro-independence separatist forces in Taiwan".

    Japan should fulfill its promise on the Taiwan issue through its actions, said Jiang.