Pat McGee noticed her daughter hadn't returned to the dentist's waiting room just before her surgery (外科手术). She walked to the bathroom and found Jessica McDaniels, 32, in there, crying.

    McGee took her daughter into her arms, "We're going to say 'goodbye' to the old Jessica," she said. "And 'hi' to the new Jessica."

    McDaniels, from St. Louis, US, had been wishing for this day since high school, when the bullying (霸凌) about her teeth started. Now that it was finally happening, she was worried and afraid.

    It was a social media post two months ago that got her there. Someone posted a photo of McDaniels with a comment about her overbite (龅牙). The post was shared many times, with many people making unkind comments on her appearance.

    The bullies didn't know the road McDaniels had traveled. She had nine operations on her ears from age 2 to 12 years old. She was almost deaf in her right ear. Her adult teeth didn't start coming in until she was 11 or 12, and doctors couldn't figure out why they were pushed outward. It got worse as she got older. McDaniels had been trying for years to get her teeth fixed, but it was always too costly.

    When her story got out, dentists wanted to help her. One of them, Maryann Udy, got in contact with McDaniels and offered her a new smile - free of charge. McDaniels wasn't sure at first, so she called her mother. The mother told her that Udy was her angel. "You need to do it," she told her daughter.

    The surgery was long and complicated (复杂的). It took weeks for the swelling (肿块) to go down, and several more months before McDaniels' new smile was ready. Later that year, she looked at her old photos online and smiled. "I loved her," she said. "She's thankful to be in less pain, to be on the way to a new smile. Sometimes, though, it feels like something is missing from who she was." Still, she loves taking selfies and admiring her new appearance. "I looked good before," she said. "I look even better now."

    Nearly all students want to have a good memory so that they can study well. Yan Jiashuo, a young girl, is quite lucky. She has received the honor of "International Master of Memory". About 300 people have been honoured as masters. Yan Jiashuo is the youngest among them.

    Yan Jiashuo always has a good memory. And the good memory comes from good training. When she was 4 years old, her parents asked her to recite ancient poems and books. She has practised a lot. So when she is at school, it is easy and quick for her to recite texts in class. What's more, she loves reading. When she was in the third grade, she could read one book a day.

    Yan Jiashuo is good at not only Chinese, but also maths. For her, numbers are not boring at all. She can make up stories with these numbers. She compares remembering a lot of numbers to watching a movie. Every group of two numbers is imagined to be a picture of the story. And these pictures are made up into a movie in her mind. She said everyone could have a good memory by training and there were plenty of ways to train your memory.