Newborn always choke on water what's going on

Newborn baby digestive system function is not fully developed, the baby's pyloric sphincter has developed very well, but the baby's cardiac sphincter has not developed well. The stomach is in a horizontal position, so after feeding water or milk to the newborn will always occur choking phenomenon. In this case, after feeding the baby water or feeding the baby, put the baby on the shoulder of the adult and pat the baby's back to eliminate excess air, so as to reduce the occurrence of baby spitting milk and spitting water.