摘要
Dear Contributors, Readers and Friends：It has been three years since the 512 Wenchuan disaster. Restoration of the affected region has been rapidly progressing. At the same time, many post-earthquake research activities have been completed. In next issue, a special section is devoted to lessons learned from the Great Wenchuan Earthquake.
Dear Contributors, Readers and Friends：It has been three years since the 512 Wenchuan disaster. Restoration of the affected region has been rapidly progressing. At the same time, many post-earthquake research activities have been completed. In next issue, a special section is devoted to lessons learned from the Great Wenchuan Earthquake.
