VIENTIANE -- Rackety trucks rush across China's border with its backwater neighbor, stirring up clouds of dust and drowning the tweets of tropical birds. Chinese projects to construct roads in one of Asia's poorest countries date back to 1962 when Laos was subject to a proxy war between the global Cold War superpowers. Nowadays, China is its largest foreign investor and aid provider in a series of infrastructure projects, claiming to change local life for better.









