A modified system unit is on display at China National Convention Center, Beijing, May 29, 2018, the second day of the ongoing China Beijing International Fair for Trade in Services. The computer contains colored cooling fluids. [Photo: China Plus/ Sang Yarong]

A suitcase-shaped computer, similar to one owned by Iron Man in "The Avengers" films, is on display at China National Convention Center, Beijing, May 29, 2018, the second day of the ongoing China Beijing International Fair for Trade in Services. [Photo: China Plus/ Sang Yarong]

A modified system unit is on display at China National Convention Center, Beijing, May 29, 2018, the second day of the ongoing China Beijing International Fair for Trade in Services.[Photo: China Plus/ Sang Yarong]

A cool and creative system unit is on display at China National Convention Center, Beijing, May 29, 2018, the second day of the ongoing China Beijing International Fair for Trade in Services. The computer contains colored cooling fluids. [Photo: China Plus/ Sang Yarong]

A cool and creative system unit is on display at China National Convention Center, Beijing, May 29, 2018, the second day of the ongoing China Beijing International Fair for Trade in Services. The computer contains colored cooling fluids. [Photo: China Plus/ Sang Yarong]