Grandma Zhang, Hello, my child is a girl. She is one year old and seven months old. She likes to walk with the front sole of her foot when walking, and she also likes to use the front sole of her foot when jogging. Don’t you know what’s unusual? Answer expert Dr. Zhang Silai (expert of sina maternal and Infant Research Institute, former director and chief physician of Pediatrics of integrated traditional Chinese and Western Medicine Hospital Affiliated to Beijing University of traditional Chi...