:: thoughts
I prefer to think of the cheer as one "unique" to TCHS. Here is the complete cheer:

"Shan Ge" (Mountain Song, in Chinese)

Ei...
Shan shang liu shui xi li li ei, hei a a yo.
Shan shang liu shui hua la la ei, hei a a yo.
Xi li li eh Hua la la eh, Hua Zhong Hua Zhong ding gua gua eh...

*repeat as necessary*

[ English Translation ]

Hey....
"Xi Li Li", when water flows down the mountains, hey yo!
"Hua La La", when water flows down the mountains, hey yo!
"Xi Li Li" hey! "Hua La La" hey! The Chinese High is the best, yay!

*repeat as necessary*

:: Comments.
It seriously isn't that weird. Now, the 'give me an oei' one is weird. Shan Ge is a traditional chinese tune.