Wen is an environmentalist who uses innovation and entrepreneurship to tackle pollution in her country. In 2016 she founded Green Yards, which deters people from disposing of household oil down drains by offering them free soap in exchange for every 5kg of oil returned to them. This oil, which pollutes the water supplies, is instead recycled into eco-cleaning products and candles. In addition, Wen and her team organise community workshops to promote recycling. In just one year, Green Yards has prevented 4.7 tonnes of used cooking oil from being dumped.