"At first, I picked an e-bike because I couldn't stand the sickening smell of gas from my scooter," says Zhang Dengming, 50, a construction supervisor in Shanghai.

At first, he focused on jobs in construction, applying to be a site supervisor. He looked for anything within an hour's commute of where he was living in Jensen Beach.

Such positions included job titles like manager of research and development, director of finance, mechanical engineer and construction supervisor.