By Chen Xi
[...]
Studies suggest that a three-second early warning time can reduce casualties by 14 percent and a 10-second early warning time can reduce them by 39 percent, Wang said.
China's early warning system also covers the largest area in the world, according to a document that the public affairs department of the Institute of Care-life sent to the Global Times on Sunday.
The system includes 31 provinces and regions, 2.2 million square kilometers and 660 million people, about 90 percent of densely populated quake-prone areas.
Warning messages are dispatched via mobile phone, radio and television, government microblogs and dedicated receiving terminals.
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