Modern Halloween is rooted in Christian and pagan festivals that were celebrated in Europe centuries ago.
The spiritual aspect of remembering the dead, inherent in those events, has long been lost.
But that religious intent is very much alive in the Mexican observance of Dia de los Muertos, often known as Mexico's Halloween.
It has also been compared with China's Tomb-Sweeping Festival, when people visit their ancestors at their graves and honor them with ceremonial offerings of food, drinks and money (usually burned).
Cemeteries become seas of dark-yellow marigold flowers. Grinning skeletons leer from festive posters. And sugar skulls are munched upon by devout observers of all ages.
The embassy of Mexico and the UNAM Center for Mexican Studies at Beijing Foreign Studies University will host a public exhibition to showcase and celebrate these holiday traditions in Beijing on Nov 1 and 2 from 11 am to 5 pm at the Arcaute Arte Contemporaneo, 56 Dongsi Jiutiao, Dongcheng district.