According to CNN, on December 20 local time, US President Joe Biden and First Lady Jennifer Biden visited Johns Hopkins Children's Hospital in Maryland during their visit to the United States and talked with healthcare workers.

As they entered the children's ward, Mr. Biden and other officials were drawn to a group of children. One of them, a little girl named Emilia, was sitting in her crib with a bottle in her hand. Emilia kept throwing the pacifier at Mr. Biden, trying to get his attention. Mr. Biden accepted the toy with a smile and gently touched the pacifier with his finger.

The scene caught Biden's attention, and he took the pacifier and put it in his mouth, tasted it carefully, and then handed it to Emilia. Emilia happily took the pacifier and laughed happily.

Mr. Biden enjoyed the interaction, praising Ms. Emilia and saying: "This is one of the best kids I've ever met." He added that he liked her smile and her optimism.

This interaction also allowed Biden to better understand and support those in need. He expressed his belief that everyone has the ability to change their own destiny, and he is willing to work hard to do so.

Overall, the interaction between Biden and Emilia was a very meaningful experience that showcased the connection and care between humans, as well as the concern and support of government leaders for the welfare of children.