Mingxin Library was originally Huang Yahua's private residence, but as her collection of books and materials related to Sim grew, she rented a second building to store them in, which is now the memorial museum's Jianxing Library.
明心書苑本是黃亞花的自宅，由於沈老的書籍資料越收越多，於是斥資在對面租下一棟洋房來存放，並將這座二館取名為「見性書苑」。