BEIJING, Feb.18 - Wu Yinan is a 4-year-old girl from a military family. She was afraid of needles, until she met Doctor Clown at the department of pediatrics in the Army Specialty Medical Center of the PLA Army Medical University, and received a handmade little dough man of Bing Dwen Dwen, the mascot of Beijing 2022 Olympics. Wu Yinan finally overcame her fear and put on a sweet smile.