出啥事？大温这方向出现神秘红光

Cannabis greenhouse lights turn Metro #Vancouver sky an eerie red 👀 https://t.co/h9PxAIEO1X

— Daily Hive Vancouver (@DailyHiveVan) December 5, 2023

When I tell you, you'll be disappointed.... Delta has some commercial greenhouse space producing marijuana. The "purple" light is used in the greenhouses to help the growing cycle. They get used rarely, but when they do, you get purple light pollution. Nothing exotic!

— Delta Police Department (@deltapolice) November 6, 2023