00509naa#a2200169#i#450# EN\\bibl\103145 20260704074926.6 2542-1840 20260630b2026####ek#y0engy0150####ca ENG RU The Impact of Involution on Chinese Undergraduates Preparing for Postgraduate Exams Journal article Kemerovo Kemerovo State University 2026 12 с. Journal article local Zhang Yingxia vestnik-pses.kemsu.ru