People wearing costumes celebrate Halloween on the Santa Monica Pier in Los Angeles County, California, the United States, on Oct. 31, 2020. With door-to-door trick or treating not recommended due to COVID-19, Public Health officials reminded the public that it is important to correctly wear face coverings as they are celebrating Halloween. (Xinhua)

People wearing costumes celebrate Halloween on the Santa Monica Pier in Los Angeles County, California, the United States, on Oct. 31, 2020. With door-to-door trick or treating not recommended due to COVID-19, Public Health officials reminded the public that it is important to correctly wear face coverings as they are celebrating Halloween. (Xinhua)

People wearing costumes celebrate Halloween on the Santa Monica Pier in Los Angeles County, California, the United States, on Oct. 31, 2020. With door-to-door trick or treating not recommended due to COVID-19, Public Health officials reminded the public that it is important to correctly wear face coverings as they are celebrating Halloween. (Xinhua)

People wearing costumes celebrate Halloween on the Santa Monica Pier in Los Angeles County, California, the United States, on Oct. 31, 2020. With door-to-door trick or treating not recommended due to COVID-19, Public Health officials reminded the public that it is important to correctly wear face coverings as they are celebrating Halloween. (Xinhua)

People wearing costumes celebrate Halloween on the Santa Monica Pier in Los Angeles County, California, the United States, on Oct. 31, 2020. With door-to-door trick or treating not recommended due to COVID-19, Public Health officials reminded the public that it is important to correctly wear face coverings as they are celebrating Halloween. (Xinhua)

People wearing costumes celebrate Halloween on the Santa Monica Pier in Los Angeles County, California, the United States, on Oct. 31, 2020. With door-to-door trick or treating not recommended due to COVID-19, Public Health officials reminded the public that it is important to correctly wear face coverings as they are celebrating Halloween. (Xinhua)

People wearing costumes celebrate Halloween on the Santa Monica Pier in Los Angeles County, California, the United States, on Oct. 31, 2020. With door-to-door trick or treating not recommended due to COVID-19, Public Health officials reminded the public that it is important to correctly wear face coverings as they are celebrating Halloween. (Xinhua)

(201101) -- SAN BERNARDINO (U.S.), Nov. 1, 2020 (Xinhua) -- People wearing costumes celebrate Halloween in a shopping mall in San Bernardino County, California, the United States, on Oct. 31, 2020. With door-to-door trick or treating not recommended due to COVID-19, Public Health officials reminded the public that it is important to correctly wear face coverings as they are celebrating Halloween. (Photo by Zeng Hui/Xinhua)