“…Conversely, in the more developed and urbanized parts of China, almost every county‐level city is close to a higher level city. Yet, as rural workers generally prefer to migrate to large cities rather than to county‐level cities (Chan et al., ), proximity to a county‐level city does not entail a reduction of rural labor surplus in more urbanized provinces. Second, as underlined in Section , given their similar economic structure, growth in county‐level cities can produce backwash effects on counties.…”