What lessons can be learned after disaster?

Editor's note: As of Tuesday, 10 people were confirmed dead, and 93 were still missing after a landslide engulfed Xinmo village in Maoxian county, Southwest China's Sichuan province, on Saturday. Can anything be done to prevent such natural disasters? And what can be done to improve the rescue efforts after a disaster happens? Three experts shared their views with China Daily's Zhang Zhouxiang:

Building ban in high-risk areas must be enforced