Photo taken on June 3, 2018 shows the Sydney Opera House during the Vivid Sydney light show in Sydney, Australia. The annual Vivid Sydney is renowned as one of the world's largest festivals of music, light and ideas which attracts at least one million visitors from all over the world each year. (Xinhua/Bai Xuefei)

Photo taken on June 3, 2018 shows the Sydney Opera House during the Vivid Sydney light show in Sydney, Australia. The annual Vivid Sydney is renowned as one of the world's largest festivals of music, light and ideas which attracts at least one million visitors from all over the world each year. (Xinhua/Bai Xuefei)

Photo taken on June 3, 2018 shows the Sydney Opera House during the Vivid Sydney light show in Sydney, Australia. The annual Vivid Sydney is renowned as one of the world's largest festivals of music, light and ideas which attracts at least one million visitors from all over the world each year. (Xinhua/Bai Xuefei)

Photo taken on June 3, 2018 shows the Sydney Opera House during the Vivid Sydney light show in Sydney, Australia. The annual Vivid Sydney is renowned as one of the world's largest festivals of music, light and ideas which attracts at least one million visitors from all over the world each year. (Xinhua/Bai Xuefei)

Photo taken on June 3, 2018 shows the Sydney Opera House during the Vivid Sydney light show in Sydney, Australia. The annual Vivid Sydney is renowned as one of the world's largest festivals of music, light and ideas which attracts at least one million visitors from all over the world each year. (Xinhua/Bai Xuefei)

Photo taken on June 3, 2018 shows the Sydney Harbour Bridge during the Vivid Sydney light show in Sydney, Australia. The annual Vivid Sydney is renowned as one of the world's largest festivals of music, light and ideas which attracts at least one million visitors from all over the world each year. (Xinhua/Bai Xuefei)