The friendly relation of China and Nepal is very old and defined by the “Sino-Nepal Treaty of Peace and Friendship” signed on April 28, 1960. This relation was tie to run the trade between two countries and trying to decrease it reliance on India. When both countries solved all border disputes along China–Nepal border by signing the Sino-Nepal boundary agreement on March 21, 1960, the relation between Nepal and China got a boost.
This is all about the irrigation project Tunnel. While making the tunnel in traditional way, It needs many skill manpower and many expenditures so they are making it by using in a modern way. They had brought a Boring Machine to start the work of tunnel.