Results of heterogeneity test.

Results of heterogeneity test.</p

Average city exports at the different geographic locations.

Average city exports at the different geographic locations.</p

Average city exports at different development of the city economy.

Average city exports at different development of the city economy.</p

Results of mediation test.

Results of mediation test.</p

Results of robustness test of the benchmark model.

Results of robustness test of the benchmark model.</p

Results of the benchmark model.

Results of the benchmark model.</p

The data of all variables.

(ZIP)</p

Results of the robustness of mediation test.

Results of the robustness of mediation test.</p

Pathways for the influence of the digital economy on city export trade.

Pathways for the influence of the digital economy on city export trade.</p

Summary statistics for variables.

Summary statistics for variables.</p