On collaborative development of industries in Beijing-Tianjin-Hebei 并列题名：On collaborative development of industries in Beijing-Tianjin-Hebei Annual report on the development of finance in Beijing-Tianjin-Hebei region Nual report on the development of finance in Beijing-Tianjin-Hebei region Research on high-quality development of social security system in Beijing-Tianjin-Hebei 并列题名：Annual report on the development of finance in Beijing-Tianjin-Hebei region 并列题名：Nual report on the development of finance in Beijing-Tianjin-Hebei region