The Elevator Earthquake Detector
![Shijingshan Military Sub-district of Beijing Municipality Shijingshan Military Sub-district of Beijing Municipality](https://omo-oss-image.thefastimg.com/portal-saas/new2023121713463403703/cms/image/eca1099e-6b9d-4904-b8d0-5620ec729a00.jpg)
Shijingshan Military Sub-district of Beijing Municipality
![Hainan Building, Haikou City, Hainan Province Hainan Building, Haikou City, Hainan Province](https://omo-oss-image.thefastimg.com/portal-saas/new2023121713463403703/cms/image/8550631c-f7dd-4c66-b6a1-6a0531ae10aa.jpg)
Hainan Building, Haikou City, Hainan Province
![Radisson Hotel Tiandi Zhengzhou City, Henan Province Radisson Hotel Tiandi Zhengzhou City, Henan Province](https://omo-oss-image.thefastimg.com/portal-saas/new2023121713463403703/cms/image/a27f1c7f-f118-42c1-8b54-0de39073bc7a.jpg)
Radisson Hotel Tiandi Zhengzhou City, Henan Province
![Zhengzhou Xinzheng International Airport Zhengzhou Xinzheng International Airport](https://omo-oss-image.thefastimg.com/portal-saas/new2023121713463403703/cms/image/793ab183-6d39-468b-8ab6-1611b3377e95.jpg)
Zhengzhou Xinzheng International Airport
![Henglong Square, Dalian City, Liaoning Province Henglong Square, Dalian City, Liaoning Province](https://omo-oss-image.thefastimg.com/portal-saas/new2023121713463403703/cms/image/ddbdb4e8-f1c0-43ae-9c17-bbde12ad484f.jpg)
Henglong Square, Dalian City, Liaoning Province
![Kuala Lumpur, Malaysia Kuala Lumpur, Malaysia](https://omo-oss-image.thefastimg.com/portal-saas/new2023121713463403703/cms/image/3ea45c47-6526-459c-86ae-53a2706edb2d.jpg)
Kuala Lumpur, Malaysia
![Shanghai Lujiazui Underground Space Shanghai Lujiazui Underground Space](https://omo-oss-image.thefastimg.com/portal-saas/new2023121713463403703/cms/image/203e8c50-493a-47cb-973a-72b4d9303c14.jpg)
Shanghai Lujiazui Underground Space
![Shanghai Pudong Chuangzhi Tiandi Shanghai Pudong Chuangzhi Tiandi](https://omo-oss-image.thefastimg.com/portal-saas/new2023121713463403703/cms/image/7174eff0-d8c9-4368-b56f-d4ad439db9b9.jpg)
Shanghai Pudong Chuangzhi Tiandi
![Santiago, Chile Santiago, Chile](https://omo-oss-image.thefastimg.com/portal-saas/new2023121713463403703/cms/image/2e180cfc-cf49-4de1-8b46-e04baa34d2b2.jpg)
Santiago, Chile