committed to zero covid and with the 0micron variant spreading has presented a massive logistical challenge. the solution has been to enforce enormous, strict, separation bubbles as our china correspondent, stephen mcdonell, explains. in beijing, olympic athletes and the public are not allowed to mix. from arrival at the airport, visiting teams are in their own bubble. people will recognise the bird s nest 0lympic stadium, and this is one of the main bubble areas. without special 0lympic accreditation or without permission from officials, you can t go past those gates there to enter the bubble. even though it is a huge area with venues and the like a small village, effectively even within there, there are discrete bubbles so that athletes don t mix with the media or invited spectators. using dedicated driving