Zhao Yanfeng, the Associate Professor in the School of Chinese as a Second Language of Peking University, has rich experience in teaching Chinese to foreigners both in and out of China. She wrote many influential books for HSK and worked as an examiner of various Chinese speaking tests.

A Short Intensive Course of HSK, the original edition of this series she wrote, has been ranking as a best seller for a long time in the retail market of Teaching Chinese as a Foreign Language and its cumulative sales had reached nearly 300,000 volumes.