WTF. There's is literally a stand-up skit[0] on this. Moreover, any quick research would show it's the Mandarin filler word. Plus, I dunno, just ask the other Mandarin-speaking faculties and students?
Do you know the number 99 (nine-nine) sounds like the derogatory term for mammary glands in Mandarin? Are they going to redact every instance of the number on campus, on grounds of potential sexual harassment?