A visitor views an artwork on an exhibition named "Shape-Shifter: the Multiverse of Wallce Chan" at Christie's Gallery in Hong Kong, south China, Jan. 11, 2019. (Xinhua/Wu Xiaochu)

Photo taken on Jan. 11, 2019 shows an artwork on an exhibition named "Shape-Shifter: the Multiverse of Wallce Chan" at Christie's Gallery in Hong Kong, south China. (Xinhua/Wu Xiaochu)

Photo taken on Jan. 11, 2019 shows artworks on an exhibition named "Shape-Shifter: the Multiverse of Wallce Chan" at Christie's Gallery in Hong Kong, south China. (Xinhua/Wu Xiaochu)

Photo taken on Jan. 11, 2019 shows an artwork on an exhibition named "Shape-Shifter: the Multiverse of Wallce Chan" at Christie's Gallery in Hong Kong, south China. (Xinhua/Wu Xiaochu)

Wallace Chan poses for a photo with his artwork on an exhibition named "Shape-Shifter: the Multiverse of Wallce Chan" at Christie's Gallery in Hong Kong, south China, Jan. 11, 2019. (Xinhua/Wu Xiaochu)

Wallce Chan is seen on an exhibition named "Shape-Shifter: the Multiverse of Wallce Chan" at Christie's Gallery in Hong Kong, south China, Jan. 11, 2019. (Xinhua/Wu Xiaochu)

Photo taken on Jan. 11, 2019 shows artworks on an exhibition named "Shape-Shifter: the Multiverse of Wallce Chan" at Christie's Gallery in Hong Kong, south China. (Xinhua/Wu Xiaochu)