In September 2020, China set itself the goal of “carbon neutrality”, which meant reducing net emissions of greenhouse gases such as carbon dioxide to zero by 2060. Changkou Village in Fujian Province, southeast China, enjoys 92% forest coverage and is surrounded by 1,266 hectares of tree-covered hills. This makes it a natural oxygen bar. On May 18, 2021, on behalf of Changkou, Zhang Linshun, the village Party secretary, accepted a "carbon ticket" issued by the local forestry department. In the p