| Variable Type | Variable Name | Data Indicator | Abbreviation | Data Source |
| Dependent Variable | Tea Export Volume | China’s annual total tea export volume to the respective country (Unit: KG) | EXijt | UN Comtrade Database (HS0902) |
| Independent Variables | Exporting Country’s GDP | GDP of China (Unit: Billion US dollars) | GDPit | World Bank |
| Importing Country’s GDP | GDP of the importing country (Unit: Billion US dollars) | GDPjt | World Bank | |
| Importing Country’s Population | Population of the importing country | POPjt | World Bank | |
| Distance | Product of the distance between the capitals of the two countries and the current year’s oil price | DISijt | CEPII Database and FRED Database | |
| Exchange Rate Level | Exchange rate of the importing country’s currency against RMB | Rt | World Bank | |
| Dummy Variable | Green Trade Barrier | Whether encountering a green trade barrier | DV | - |