Simplify the following text for a Grade 16 native English-speaking person.
Original: The Hanyu Shuiping Kaoshi , ( simplified Chinese : æ è æ å è è ; traditional Chinese : æ 1\/4 cents è æ å è è ; hanyu pinyin : HÃ nyÇ '' ShuÇ pÃ ng KÇ oshÃ ) , shortened as HSK , is the People 's Republic of China 's only standardized test of Standard Mandarin Chinese proficiency for non-native speakers , such as foreign students , overseas Chinese , and members of ethnic minority groups in China .
Simplified: The Hanyu Shuiping Kaoshi , , abbreviated as HSK , is the People 's Republic of China 's only standardized test of Modern Standard Chinese language proficiency for non-native speakers , namely foreign students , overseas Chinese , and members of ethnic minority groups in China .