中國知網 China national knowledge infrastructure (CNKI) provides fulltext access to master and doctoral theses since 1984. They are from two databases, namely 中國博士學位論文全文數據庫 (China doctoral dissertations full-text database (CDFD)) and 中國優秀碩士學位論文全文數據庫 (China master theses full-text database (CMFD)).
CDFD contains over 389,000 doctoral dissertations from 473+ doctor degree granting institutions. As for CMFD, it has 3,766,000 masters theses from 756+ master degree granting institutions.
Access: HKUL homepage > Electronic Resources > 中國知網
When you are in CNKI, select the two databases from the list.