Wenchuan 5.12 earthquake, the Richter scale reached 8.0Ms, Beijing time on May 12, 2008, 14:28:04. The worst disaster occurred in Yingxiu Town, and the earthquake site was selected in Lukou Middle School. The moment a clock was found from the school ruins, the clock was carved by Han Baiyu as a memorial sculpture. The Wenchuan earthquake of 5.12 killed 69227 people, injured374643 and disappeared 17,923 people. There are still 19 students and 2 teachers' bodies under the ruins of Lukou Middle School. Because of the five-story teaching building, there is another layer deep underground.