Colin Huang or Huang Zheng (Chinese: 黄峥; pinyin: Huáng Zhēng, born January 1, 1980) is a Chinese billionaire businessman and philanthropist. He is the founder and former CEO of the e-commerce company Pinduoduo, which is
Trees and plants within cities help mitigate air pollution by absorbing carbon dioxide and releasing oxygen. They also act as natural air filters, trapping dust and particulate matter
