Advanced Mandarin Chinese, both reading and writing, is strongly desired. English does not need to be fluent-but you must be able to communicate in English.

需要中文阅读和书写流畅。英文不需要流利，但必须能够用英文交流。

youdao

I am a native speaker of English and speak Spanish fluently, and I am currently studying Mandarin Chinese at the begging levels and Spanish at the advanced levels.

我的母语是英语并且可以讲很流利的西班牙语，现在正在学习普通话并且希望可以说得像西班牙语一样流利。

youdao

At school, I qualified for Mandarin Class Two advanced certificate. I believe my fluent Mandarin can improve my service to customers.

在校期间我拿到了平凡话二级甲等证书，我相信一口流利的平凡话能更好的去服务客户。

youdao

She holds a bachelor's and a master's degree from Stanford University, and studied advanced Mandarin Chinese at Beijing's Tsinghua University.

CNN: CNN Profiles - Kristie Lu Stout - Anchor and correspondent

That growing demand had The College Board survey high schools to determine the interest in advanced-placement exams for Mandarin.

NPR: Chinese Classes Grow in Popularity with U.S. Students