Orijing is famous!
If you take a look at http://www.china-fpa.org/english/china/nationality/yao.htm, you’ll see the following:
Yao nationality distributes in six provinces, and majority of them live in Guangxi Zhuang Autonomous Region. They have their own language and they can also speak mandarin. Their oriJing can ascend to Qin Dynasty. The recordation was getting more in the Song Dynasty. The relationship with other nationalities became close in their developing. There is some difference among the branches.
Was that a typo, or does that just affirm the stereotype that Chinese people suck at English?