Study on the regulation and optimization methods of land use in Beijing-Tianjin-Hebei region 并列题名：Study on the regulation and optimization methods of land use in Beijing-Tianjin-Hebei region Research on the allocation of innovation resources in the Beijing-Tianjin-Hebei region Study on the development index of economic and social integration in Beijing-Tianjin-Hebei region based on the comparison of foreign-funded enterprises in Beijing-Tianjin-Hebei region Annual report on the development of finance in Beijing-Tianjin-Hebei region Nual report on the development of finance in Beijing-Tianjin-Hebei region 并列题名：Annual report on the development of finance in Beijing-Tianjin-Hebei region