Some services are only available via the on-campus access. Accessing academic papers also needs on-campus access. To access the campus's network remotely, you can do so by using a VPN provided by XJTU.
It is available on all computer and mobile platforms.
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https://webvpn.xjtu.edu.cn/
Visit this site and use your NetID to logon.
Link: The Network Information Center of XJTU download page
All powerpoint templates are available in Chinese: