An activity named "Low-carbon and green travel" was held in the Nanhu wetland park, in the city of Hohhot, Inner Mongolia, on April 21, to celebrate the upcoming World Earth Day, which falls on April 22. People promote healthy low-carbon ways to travel through this activity.

People riding bicycles in the Nanhu wetland park, in the city of Hohhot, Inner Mongolia, on April 21, to celebrate World Earth Day.

People riding bicycles at the “Low-carbon and green travel” activity, in the Nanhu wetland park, in Hohhot on April 21.