Zhou Chun, a master's student at Harvard, came back to Shanghai after graduation in 2016 and launched a company focused on educating people on trash sorting in October.

Now, her company has eight full-time employees and has created awareness and trained volunteers to help form trash-sorting habit in 88 residential communities in Shanghai. They work with property management staff members and local community workers to ensure the waste is correctly disposed.

Born and raised in Shanghai, the 35-year-old woman has been interested in environment protection since 2011, when she quit her civil servant job and joined an NGO to protect bar-headed gooses in Qinghai-Tibet Plateau.