He learned in detail about the display and preservation of the historical data and relics, looking round a half underground house, a tunnel, bed room, soldiers' hall, etc.

At the half underground house he watched a photo President Kim Il Sung had taken with Peng Dehuai, commander of the CPV, looking back with deep emotion on the unforgettable days the armies and people of the DPRK and People's Republic of China fought shoulder to shoulder.

He dropped in at the operation room in the tunnel where a photo of the President autographing in high praise of the feats performed by the men and officers of the CPV on March 4, 1953 and his autograph were on display.

There he noted that the Chinese party and government dispatched the CPV to help at the cost of blood the DPRK in its just struggle under the banner of "Resisting America and Aiding Korea, Safeguarding the Home and Defending the Motherland" when its people fought hard battles to beat back the imperialist aggression forces.

Looking at the operation map hanging on a wall of the tunnel, he said many known and unknown fighters of the CPV including Hero Huang Jieguang produced during the battle on the Sanggam Pass unhesitatingly dedicated their youth and lives on the Korean front.

He went round the bed room used by the President several times including August 26, 1953 and visited by leader Kim Jong Il on August 25, 1954, Kim Jong Un said it is a precious historical relic which bears the mark of the wartime.

He looked round the monument erected to convey the undying exploits of the President down through generations.

Going round of the soldiers' hall where the President made a historic speech on August 27, 1953, Kim Jong Un said the army and people of two countries firmly consolidated the militant friendship, sharing blood in the struggle for their common cause.

At the end of his visit he gave instructions on preserving and managing the revolutionary site.

He had a photo taken with the employees of the revolutionary site.

He was accompanied by Pak Pong Ju, Choe Ryong Hae, Jang Song Thaek, Kim Kyok Sik, Jang Jong Nam, Kim Kyong Hui, Kim Won Hong, Kim Yang Gon, Choe Pu Il, Ri Yong Gil, Kim Kyong Ok, Kim Yong Chol, Pak Jong Chon, Pak Thae Song, Hwang Pyong So, Kim Pyong Ho and Kim Kye Gwan.