For the past two months, Mandy Chen, a second-year student at Beijing University of Technology, has been posting photos of herself to Taobao, posing with a reusable cup, climbing stairs and switching off lights. Taobao's Al algorithm （算法） calculates that Chen's use of a reusable cup reduced 15. 7 grams of carbon emissions （排放）, while her choice to take the stairs instead of the lift resulted in a reduction of 19.5 grams.
After seven days of posting her photos, Chen exchanged the points for a dozen of biodegradable rubbish bags from Taobao. Everyone can get an endless supply of free trash bags if they keep going, according to Chen.
Chen uses Carbon88, a platform launched last August by Alibaba Group Holding, to help the more than 800 million users on Taobao adopt a sustainable lifestyle. The platform rewards users for over 70 low-carbon behaviours. It also recommends products that it considers environmentally sustainable, and gives users points for buying them.
"I didn't know that my actions could produce such carbon reduction, " Chen said, "Now I feel good for what I'm doing to make this world a tiny bit better. We as a part of society can call for more systemic changes. "
A. It aims to encourage them to reduce their carbon footprint.
B. And her efforts to save electricity prevented 65.50 grams.
C. It's a valuable addition to current carbon-reduction policies.
D. Carbon88 has helped increase Chen's environmental awareness.
E. Within minutes, she receives a dozen points from the app as a reward.
F. They range from taking public transport to shopping of second-hand items.
G. She is now saving points for something better, like snacks and water bottles.
