A motorcycle exhibition is held at the China National Convention Center in Beijing on July 28-29, 2018. Organized by an online auto platform, the fair displayed hundreds of motorcycles from home and abroad, such as the Ducati 959 sport bike, vintage Changjiang 650 sidecar, the Harley-Davidson WLA produced to the U.S. Army during the World War II and Benelli Leoncino bike. (Photo: China News Service/Fu Yu)

A motorcycle exhibition is held at the China National Convention Center in Beijing on July 28-29, 2018. Organized by an online auto platform, the fair displayed hundreds of motorcycles from home and abroad, such as the Ducati 959 sport bike, vintage Changjiang 650 sidecar, the Harley-Davidson WLA produced to the U.S. Army during the World War II and Benelli Leoncino bike. (Photo: China News Service/Fu Yu)

A motorcycle exhibition is held at the China National Convention Center in Beijing on July 28-29, 2018. Organized by an online auto platform, the fair displayed hundreds of motorcycles from home and abroad, such as the Ducati 959 sport bike, vintage Changjiang 650 sidecar, the Harley-Davidson WLA produced to the U.S. Army during the World War II and Benelli Leoncino bike. (Photo: China News Service/Fu Yu)

A motorcycle exhibition is held at the China National Convention Center in Beijing on July 28-29, 2018. Organized by an online auto platform, the fair displayed hundreds of motorcycles from home and abroad, such as the Ducati 959 sport bike, vintage Changjiang 650 sidecar, the Harley-Davidson WLA produced to the U.S. Army during the World War II and Benelli Leoncino bike. (Photo: China News Service/Fu Yu)

A motorcycle exhibition is held at the China National Convention Center in Beijing on July 28-29, 2018. Organized by an online auto platform, the fair displayed hundreds of motorcycles from home and abroad, such as the Ducati 959 sport bike, vintage Changjiang 650 sidecar, the Harley-Davidson WLA produced to the U.S. Army during the World War II and Benelli Leoncino bike. (Photo: China News Service/Fu Yu)

A motorcycle exhibition is held at the China National Convention Center in Beijing on July 28-29, 2018. Organized by an online auto platform, the fair displayed hundreds of motorcycles from home and abroad, such as the Ducati 959 sport bike, vintage Changjiang 650 sidecar, the Harley-Davidson WLA produced to the U.S. Army during the World War II and Benelli Leoncino bike. (Photo: China News Service/Fu Yu)

A motorcycle exhibition is held at the China National Convention Center in Beijing on July 28-29, 2018. Organized by an online auto platform, the fair displayed hundreds of motorcycles from home and abroad, such as the Ducati 959 sport bike, vintage Changjiang 650 sidecar, the Harley-Davidson WLA produced to the U.S. Army during the World War II and Benelli Leoncino bike. (Photo: China News Service/Fu Yu)

A motorcycle exhibition is held at the China National Convention Center in Beijing on July 28-29, 2018. Organized by an online auto platform, the fair displayed hundreds of motorcycles from home and abroad, such as the Ducati 959 sport bike, vintage Changjiang 650 sidecar, the Harley-Davidson WLA produced to the U.S. Army during the World War II and Benelli Leoncino bike. (Photo: China News Service/Fu Yu)

A motorcycle exhibition is held at the China National Convention Center in Beijing on July 28-29, 2018. Organized by an online auto platform, the fair displayed hundreds of motorcycles from home and abroad, such as the Ducati 959 sport bike, vintage Changjiang 650 sidecar, the Harley-Davidson WLA produced to the U.S. Army during the World War II and Benelli Leoncino bike. (Photo: China News Service/Fu Yu)

A motorcycle exhibition is held at the China National Convention Center in Beijing on July 28-29, 2018. Organized by an online auto platform, the fair displayed hundreds of motorcycles from home and abroad, such as the Ducati 959 sport bike, vintage Changjiang 650 sidecar, the Harley-Davidson WLA produced to the U.S. Army during the World War II and Benelli Leoncino bike. (Photo: China News Service/Fu Yu)

A motorcycle exhibition is held at the China National Convention Center in Beijing on July 28-29, 2018. Organized by an online auto platform, the fair displayed hundreds of motorcycles from home and abroad, such as the Ducati 959 sport bike, vintage Changjiang 650 sidecar, the Harley-Davidson WLA produced to the U.S. Army during the World War II and Benelli Leoncino bike. (Photo: China News Service/Fu Yu)