Random parking and other violations by users of dockless bicycles have prompted people nationwide to take action

By day, Zhao Qi, 23, is an architectural designer in Beijing, but after dark, he is a seasoned hunter in the concrete jungle. Residential areas are his hunting grounds, his smartphone is his weapon, and poorly parked shared bikes are his prey.

On finding shared bikes that have been parked arbitrarily or are blocking traffic, Zhao takes a photograph and reports them to the bike-share providers. Then he unlocks the bicycles and moves them to a nearby public parking area.