Let's learn Mandarin Chinese while appreciating the Shen Fen Zheng identifiers (身份证号码) from different cities and counties of China's Chongqing municipality (重庆直辖市). 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 1,000 Chinese IDs. Pinyin and English have been provided for all the addresses. The titles are suitable for the students of HSK all levels.