China believes the Hanoi summit between Pyongyang and Washington is constructive and Beijing will continue to play an active role in the Korean Peninsula issue, Zhang Yesui, spokesman for the second session of 13th National People's Congress, said on Monday.

Although the two sides failed to release any document, they said they held in-depth communication and expressed willingness to continue the dialogue, Zhang told a news briefing.

China hopes Pyongyang and Washington, key parties of the issue, will keep good faith, remain patient and continue their dialogue in the right direction to achieve progress, he said.

The Korean Peninsula issue is complicated and sensitive and will meet difficulties as the negotiation goes deeper, he said.

The key to resolving the issue is to insist on a political solution to achieve the denuclearization and establish a peace mechanism on the peninsula, he added.

Safeguarding peace and stability on the Korean Peninsula is in line with the interests of all parties, he said, adding that China will continue to make active efforts.