A participant with costume attends the annual bike rave party in Vancouver, Canada, April 1, 2016. Around a thousand cyclists of different ages joined the annual Vancouver bike rave party with their decorated bicycles and cycled around the city. This is one of the biggest fun events for the bicycle lovers to enjoy together every year in Vancouver.(Xinhua/Liang Sen)

A participant poses with his illuminated eyewear at the annual bike rave party in Vancouver, Canada, April 1, 2016. Around a thousand cyclists of different ages joined the annual Vancouver bike rave party with their decorated bicycles and cycled around the city. This is one of the biggest fun events for the bicycle lovers to enjoy together every year in Vancouver.(Xinhua/Liang Sen)

A participant decorates his bicycle with neon light at the annual bike rave party in Vancouver, Canada, April 1, 2016. Around a thousand cyclists of different ages joined the annual Vancouver bike rave party with their decorated bicycles and cycled around the city. This is one of the biggest fun events for the bicycle lovers to enjoy together every year in Vancouver.(Xinhua/Liang Sen)

Participants ride their illuminated bicycles at the annual bike rave party in Vancouver, Canada, April 1, 2016. Around a thousand cyclists of different ages joined the annual Vancouver bike rave party with their decorated bicycles and cycled around the city. This is one of the biggest fun events for the bicycle lovers to enjoy together every year in Vancouver.(Xinhua/Liang Sen)

People look at participants' decorated bicycles at the annual bike rave party in Vancouver, Canada, April 1, 2016. Around a thousand cyclists of different ages joined the annual Vancouver bike rave party with their decorated bicycles and cycled around the city. This is one of the biggest fun events for the bicycle lovers to enjoy together every year in Vancouver.(Xinhua/Liang Sen)