“Once the technical issues are resolved, diplomats should sit down and talk to each other about how each party would benefit from such international cooperation,” said Li Luoli the vice president of the China Society of Economic Reform, a state-run think tank, who is one of the plan’s masterminds.

The water taken from Baikal will be a fraction for the lake, which contains 23,000 cubic kilometers or roughly 20 percent of the world’s unfrozen surface fresh water.

"However, for Mongolia and northern China which have been plagued by water scarcity, it will help improve environmental conditions that have become a bottleneck for economic development," he wrote in his book in 2012.

For Russia the project would be good, as it would develop resource-rich Siberia and become a major exporter of water, strengthening both politically and economically, according to Li.

The feasibility of such a plan is questionable, as it will involve three countries. "Technology is not a problem. Diplomatic negotiations will depend on the local government," an expert who asked not to be named told the Global Times.

The Russian government has not commented on the issue, but environmentalists have expressed concerns that Lake Baikal has been drying up at an alarming pace.

A 2015 report said the shores of Baikal are covered with rotting algae dangerous to its unique ecosystem.

Lake Baikal is increasingly contaminated by Spirogyra, which could pose a threat to the purity of its waters.

Spirogyra is not native to Baikal's ecosystem. It thrives on biological waste which, according to ecologists, comes from sewage facilities from several local holiday centers, as well as private boats.

Also in 2015, Baikal’s water level hit a record low – five centimeters below the critical level of 456 meters.