Place the two data files in this folder before running the scripts:

  raw_bei_panel.xlsx      the raw Business Environment Index panel as obtained from the
                          Peking University-Wuhan University Joint Task Force
                          (296 prefecture-level cities, 2017-2023)

  city_coordinates.csv    city-centre coordinates, columns: city, lat, lng
                          (296 rows, one per city in the panel)

analysis_panel.csv is produced by code/01_build_panel.py and should not be edited by hand.
