Artist Tin Lun Li created 'Relation In Time' to showcase the relationship between couples. His busts were inspired by Marina Abramovic and Ulay's perfomance called 'The Artist Is Present.'
The subjects are the artist and his wife. They were sculptured from layers of computer generated cross-section images. The two figures complete each other. The man's negative space is filled by the woman's positive space and vice versa.
The shape of the busts seem to shift as if their personalities are changing as you move around the figures. From one angle, the couple looks like they are fighting, from another they are being playful. The artist did this to explore the relationship between art and audience with positive and negative space sculptures. This is also true to life, your perception of a stranger in a public space is never accurate and constantly changing.