A facade projection is shown on the wall of Vancouver Art Gallery during the Facade Festival held in Vancouver, Canada, Sept. 8, 2019. Facade Festival is a public art project and cultural event taking place from sunset to midnight each evening from Sept. 8 to 14. A total of 10 Canadian digital media artists showcase their work by using projection mapping to produce light performance outside the building of Vancouver Art Gallery. (Photos: Xinhua)

A facade projection is shown on the wall of Vancouver Art Gallery during the Facade Festival held in Vancouver, Canada, Sept. 8, 2019. Facade Festival is a public art project and cultural event taking place from sunset to midnight each evening from Sept. 8 to 14. A total of 10 Canadian digital media artists showcase their work by using projection mapping to produce light performance outside the building of Vancouver Art Gallery.

People watch the facade projection on the wall of Vancouver Art Gallery during the Facade Festival held in Vancouver, Canada, Sept. 8, 2019. Facade Festival is a public art project and cultural event taking place from sunset to midnight each evening from Sept. 8 to 14. A total of 10 Canadian digital media artists showcase their work by using projection mapping to produce light performance outside the building of Vancouver Art Gallery.

A facade projection is shown on the wall of Vancouver Art Gallery during the Facade Festival held in Vancouver, Canada, Sept. 8, 2019. Facade Festival is a public art project and cultural event taking place from sunset to midnight each evening from Sept. 8 to 14. A total of 10 Canadian digital media artists showcase their work by using projection mapping to produce light performance outside the building of Vancouver Art Gallery.

A facade projection is shown on the wall of Vancouver Art Gallery during the Facade Festival held in Vancouver, Canada, Sept. 8, 2019. Facade Festival is a public art project and cultural event taking place from sunset to midnight each evening from Sept. 8 to 14. A total of 10 Canadian digital media artists showcase their work by using projection mapping to produce light performance outside the building of Vancouver Art Gallery.

A facade projection is shown on the wall of Vancouver Art Gallery during the Facade Festival held in Vancouver, Canada, Sept. 8, 2019. Facade Festival is a public art project and cultural event taking place from sunset to midnight each evening from Sept. 8 to 14. A total of 10 Canadian digital media artists showcase their work by using projection mapping to produce light performance outside the building of Vancouver Art Gallery.

People watch the facade projection on the wall of Vancouver Art Gallery during the Facade Festival held in Vancouver, Canada, Sept. 8, 2019. Facade Festival is a public art project and cultural event taking place from sunset to midnight each evening from Sept. 8 to 14. A total of 10 Canadian digital media artists showcase their work by using projection mapping to produce light performance outside the building of Vancouver Art Gallery.