Japan's Foreign Minister Motegi Toshimitsu and his Chinese counterpart, Wang Yi, have held discussions over the phone. The talks took place on Monday night.
Japan's Foreign Ministry said Motegi expressed hope for progress in a wide range of bilateral issues, particularly as next year marks the 50th anniversary of the normalization of diplomatic relations between the countries.
Motegi also expressed concerns over a new Chinese law that allows the country's coast guard to use weapons, and Beijing's increased activities in the East and South China seas.
He also said he is worried about the situation in Hong Kong and human rights issues in Xinjiang and urged Beijing to take concrete action.
China's foreign ministry said Wang agreed with Motegi that their countries would support each other in staging the Tokyo Summer Olympics and the Beijing Winter Olympics.
Wang also said Beijing is willing to help improve the feelings Japanese and Chinese people have toward one another ahead of the 50th anniversary.
The ministry, however, said Wang warned Tokyo against interfering in China's internal affairs, like those concerning Hong Kong and the Xinjiang Uygur Autonomous Region.
It said Wang told Motegi that Japan is obliged to comply with a peace and friendship treaty it signed with China, even though the country is an ally of the US.