Combined image taken with a drone on Sept. 19, 2017 (Top) shows people reacting at the site of a collapsed building after an earthquake in the number 286 of the Alvaro Obregon street, and on Sept. 19, 2018 (Bottom) shows people taking part in a homage during the commemoration of the first anniversary of the 7.1-magnitude earthquake of Sept. 19, 2017, in Mexico City, capital of Mexico. (Xinhua/Cesar Vicuna)
