If you want to search for cross-border e-commerce data, you can try the following ways.

First, you can go to the official websites of some professional cross-border e-commerce research institutions or consulting companies, such as the World Trade Organization (WTO), the Cross-border E-commerce Research Institute, etc. These institutions usually publish industry reports, survey data, etc., which can provide a lot of relevant data.

Secondly, you can go to the official websites of some large e-commerce platforms or look for data in financial announcements. Internationally renowned e-commerce platforms such as Amazon, Alibaba, and eBay usually publish some data related to cross-border e-commerce, such as cross-border sales, the number of cross-border buyers, etc.

In addition, some authoritative financial media or national statistical agencies will also publish some reports and data on cross-border e-commerce. You can refer to the financial sections of some mainstream media, such as Bloomberg, Forbes, Financial Times, etc., or go to the official website of the National Bureau of Statistics to find domestic and foreign cross-border e-commerce data.

Finally, you can also try some data platforms or databases of professional market research institutions, such as Euromonitor International, Statista, etc. These platforms usually provide detailed market data, trend analysis, etc., which can conduct more in-depth research on cross-border e-commerce data.