There is no such thing as seven signs of a smart newborn, and smart newborns are often understood as having a well-developed nervous system. Common manifestations include knowing hunger on their own, good sleep quality, and auditory-visual coordination. 1. Hunger: newborns will appear very early hunger, hunger will cry loudly, and from birth to have the ability to suck, after feeding the cry disappears. 2. Good sleep: newborns sleep quality is relatively good, about 20 hours of sleep a day, basically in a sleep state, which also helps the baby’s brain development, but also promotes a smart performance. 3. Auditory-visual coordination: newborns can look for the source of sound according to the sound, and visually they will appear to follow the light source to see. The above performance is not the determining factor of intelligence, the child’s future still needs to be cultivated and the correct guidance.