SEOUL, Sept. 17 (Xinhua) -- South Korean President Moon Jae-in said Monday that he will have frank talks with top leader of the Democratic People's Republic of Korea (DPRK) Kim Jong Un during the upcoming inter-Korean summit set to last for three days from Tuesday in Pyongyang.

Moon told a meeting with his senior aides that it will be significant to make a fruitful development in inter-Korean relations by implementing the past agreements, which the two sides have reached, rather than reaching additional agreements.

For the implementation, building trust between the two Koreas would be the must-do, Moon noted.

"I aim to frankly have many talks with Chairman Kim Jong Un during the upcoming summit," Moon said ahead of his first visit to the DPRK's capital city since he took office in May last year.

It would be the third Moon-Kim summit in less than five months since the first meeting on April 27 at the border village of Panmunjom.

Moon said what he wants is an irreversible, lasting peace on the Korean Peninsula, which is a way to economic co-prosperity and reunification regardless of international security situations.