• 1997-1999 Involved in Shanghai Linux User Group.
• 1998-1999 Involved in "Linux International" <www.li.org>.
• 1999-2001 IRC Operator of irc.linux.org, LISC (Linux Internet Support Cooperative) and member of Open Project Net <www.linpeople.org>.
• 2000 Consulting for Security company NetGuard in Beijing.
• 2000 Involved Geekbone <geekbone.org> (Internationell chinese geeks organization).
• 2000－2002 Worked as network/linux/ administrator and internal support in Jupiter MMXI <www.mmxi.com>.
• 2001-2002 Develop custom Linux Firewall for JRGIT.
• 2002 Consulting for e-business and Internet development company Neoloop for Internet application.
• 2002 Security Consulting for Kpworld <www.kpworld.com>, Beijing, China.