Study on the long-term mechanism of tourism poverty alleviation in ethnic minority areas 并列题名：Study on the long-term mechanism of tourism poverty alleviation in ethnic minority areas Study on linkage mechanism of public information poverty alleviation in Qinba mountain area Study on the innovation of ceusro in universities of ethnic minority areas 并列题名：Study on linkage mechanism of public information poverty alleviation in Qinba mountain area Study on employment promotion policy of population urbanization in ethnic minority areas Study on the long-term mechanism of green finance development in China