Three-and-a-half-year-old adorable Yu Yu "picked up" a down-and-out stern uncle …

Three-and-a-half-year-old adorable Yu Yu "picked up" a down-and-out stern uncle, Gu Feng, and pestered him relentlessly calling him Daddy. Gu Feng was healed by her innocence and formally adopted her. Later, three prickly older brothers moved into the home: the aloof eldest brother in scientific res…