“…In addition, the literature review demonstrates that research on family background and educational resources influences access to higher education, especially on education opportunity and attainment. However, most studies have focused on educational equity in compulsory education, with few focusing on higher education (Long et al, 2022;Zhang et al, 2018). Previous studies also focus on inequality in higher education between urban and rural students before 2020 (Goastellec & Välimaa, 2019;Jia & Ericson, 2017;Ou & Hou, 2018).…”