Let's learn Mandarin Chinese while appreciating the identifiers (身份证号码) from different cities and counties of China's (陕西省). This book contains 100 imaginary (virtual) Chinese Shen Fen Zheng of men and women of different Chinese ethnic groups to help the students of Mandarin Chinese language understand the concept of Chinese IDs along with associated non-real addresses, postal codes, and phone numbers. The book series contain 10 books and total . Pinyin and have been provided for all the addresses. The titles are suitable for the students of HSK all levels.