North Korea appears to have eyed China’s railway expertise to revamp its outdated rail or subway networks, Chinese state media revealed in new footage about DPRK Premier Pak Thae Song’s visit to Beijing.

Pak traveled to China on a two-day state visit from July 10 and held meetings with Chinese Premier Li Qiang and President Xi Jinping. Both states framed the visit as part of joint celebrations of the 65th anniversary of the 1961 China-DPRK Treaty of Friendship, Cooperation and Mutual Assistance.

While Chinese and DPRK state media covered the news of the visit, they provided few details