Under the Belt and Road, China's OFDI has shaped their industrial structure upgrading in Mekong river nations. This paper analyzes its impacting mechanism, establishes national industrial structure upgrading model, and uses direct investment stock and economic indicators of China on five Mekong river nations to analyze its impacts of China's OFDI on Mekong river nations in their industrial structure upgrading via medium effect. China's OFDI pushes their industrial structure upgrading generally, with an annual increasing rate 7.31 units during 2008 to 2018, through technical overflow, productive elements supply and three productivity effects, of which productivity effect contributes the most. Under the background of Lancangjiang-Mekong cooperation, it should be addressed that China's OFDI exerts a positive influence on Mekong river nations. A supportive investment policy will better construct the united Lancangjiang-Mekong coalition.
As internet grows fast, network is becoming a vent of environmental interests conflict of major water projects, the public irrational awareness of their environmental impacts is readily to form network rumor so as to enlarge its social risk. This paper uses environmental damage rumor to explore its transmitting mechanism of major water projects in interaction of government-media-public, and quantitatively studies the impacts of rumor during network transmission on risk management via its hyperspatiotemporal, multiple subjectivity and universality, and discusses paths to governmental governance and prevention of social risks. Matlab simulation suggests that measures such as refuting rumor speed, intensity and information openness vary with rumor transmitting group, stages, information causes and importance. This paper presents suggestions accordingly.