China and Tajikistan agreed to jointly launch cross-border railway, road and natural gas pipeline projects, and explore cooperation in wind and solar energy, according to the joint statement.

Both sides will better share intelligence to fight the "evil forces" of terrorism, extremism and separatism, as well as cyber crime, drug smuggling and transnational organized crime, the joint statement said.

The two presidents also witnessed the signing of a series of cooperation documents, including a bilateral cooperation plan, and agreements on science, agriculture, energy, infrastructure, human resources and media.