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Held on both land and sea, the drill is a routine one between China and Russia, and does not target any third party, according to Yang.
For coal mines struggling to stay afloat, maintenance of underground equipment was likely to be overlooked, Yang said, adding that coal price increases this year have meant capacity expansion in mines pending closure, resulting in more accidents.
He said Premier Li will suggest making people-to-people exchanges a new pillar for China-ASEAN cooperation, and will stress China's constant support for ASEAN common community building as well as a bigger role for ASEAN in international affairs at the China-ASEAN leaders' meeting.
Xi noted that Ningxia is an important ecological security barrier in northwestern China, and said construction of "green barriers" should be strengthened.
"It was dirty in the past. When it rained, water on the ground became mud. Now even the mineshaft is as clean as a station hall," he says.
来源：资阳报