Can the family members of Xiamen University alumni enter the library?

Of course. Official website of Xiamen University shows that the Xiamen Library is open to the public free of charge for 365 days throughout the year, and wireless Internet access is provided in the library. Xiamen University Library was founded in 192 1, where famous librarian, literary master Lin Yutang, historian, anthropologist Feng, financial economist Zhu Baoxun and mathematical genius Chen Jingrun all worked.