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. (Photo: Liang Sen/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. (Photo: Liang Sen/Xinhua)

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. (Photo: Liang Sen/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. (Photo: Liang Sen/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. (Photo: Liang Sen/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. (Photo: Xinhua)

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.(Photo: Liang Sen/Xinhua)