“…The data collected in this study is taken from multiple sources. Firstly, based on the study conducted by (He et al, 2021a), we collect data for CID from the Ministry of Environmental Protection of China, which has identified the 16 industries involved in polluting the environment. These industries are, thermal power generation, steel, cement, electrolytic aluminum, coal, metallurgy, chemicals, petrochemicals, building material, paper, brewing, pharmaceuticals, fermentation, textile, leather, and mining.…”