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by seanmcdirmid 3102 days ago
Beijing is a province in itself with a lot of countryside and satellite cities (chanping, miyun, etc...). It would be weird to include nearby surrounding hebei.

Perhaps they meant Beijing and Tianjin combined + Langfang and Zhangjiakou? That could be around 40 million. Jingjinji (Tiānjīn, Beijing, Hebei) is around 130 million, but that includes all of hebei.