They were asked to abide by political rules and fully implement the Party's lines, principles and policies, as well as the decisions of the Central Committee.
Every year, the base camp is transformed into a nylon tent city of around 1,500 people for two months starting in April, when climbers descend on the mountain with the sole aim of reaching its summit.
The challenge of dealing with pollution in rural areas is huge, particularly poorer regions in western China, where a lot of the coal pollution problems have been shifted, she added.
Then there is the question of legality. No major US news outlet has asked whether the airstrikes are even legal under international law or whether they constitute a violation of the UN Charter.