I'll be the first foreigner working only in the office, and I plan to bring a lot of good additions and useful changes to the company.

Really, Dan? According to your own advertisement on worldoftefl.com, that appears to not quite be the case.

http://worldoftefl.com/english-conversation-teacher-needed-in-guangzhou/

Contact Information
Welcome to join Worlda and our teams!
Worlda’s Website: www.worldaedu.com
HR staff: Locke and Mary Wonderly (HR Manager)
Telephone: 86-20-38320536, 86-13711667097
Office hour: 9:30a.m. to 6:20p.m. Monday to Friday (China time)
Skype account: worlda-locke and yuqmary
Email address : worldavisa@gmail.com(Locke)
worlda2010adm@163.com or caseywonderly@yahoo.cn (Mary)

Skype interview will be arranged within 5 working days after receiving the candidate’s reply by email.

So either there's another foreigner called Mary Wonderly, or the infamous Mary Yu, is now using an alias name?