Two Chinese police officers were sitting in the car at Guilin Highway. Suddenly a cute dog appeared by their window, seemingly asking for help. According to the media, a cute golden retriever (寻回猎犬) sought the help of the two police officers. Obviously, the dog was lost and his owner was nowhere near the neighborhood.

One of the police officers said that it was already 1 a.m. when the dog approached them with his leash (狗链) in its mouth. The dog even followed them while they worked, but because people might get frightened and for the dog's own safety, the two decided to just take the dog to the police station. There, they gave him food and water to drink.

The dog stayed in the police station until the policemen came back at 8 in the morning. To their surprise, the dog quickly jumped inside the police car after they got ready to work that day. He just sat there as if asking the two officers to help him find his way back to his owner. Touched by the dog's friendly behavior, the officers decided to ask the public to help them find the owner.

A couple of hours later, the dog's owner was informed and quickly rushed to the police station. The owner said that his 2-year-old golden retriever had a habit of hunting for mice and must have wandered far from home and got lost. He said that his dog was trained for a short while at a Nanning police base.

About 15 years ago, Andrew McLindon, a businessman and crazy cyclist, was riding his bike in Austin, Texas, when he thought about Jack, a friend’s 12-year-old son. Jack had never known the joy of biking because he suffered from hydrocephalus(脑水肿), a buildup of fluid in the brain that often causes balance disturbances.

When he got home, McLindon, now 60, went online and found a three-wheel bike with a balancing bar, perfect for a child with balance issues. Soon Jack was riding around the street with his friends, having fun and getting exercise. But there was more, as his friend told McLindon. “I’ll never forget the smile on his face when my son is interacting with other kids.”

That smile launched the McLindon Family Foundation. Funded by donations, the group works with clinics to find children who can benefit from owning an adaptive bike and to help make each bike to the particular needs of the child. A bike may include a headrest, a shoulder belt, a seat belt and soon. The bikes are expensive-$3,000 to $4,000, and that’s with the foundation’s producer’s discount. For kids lucky enough to get one, they’re a life changer.

“We worked with a 14-year-old who has spina bifida(脊柱裂),” says McLindon. “She spent most days on the couch watching TV. Soon after she got her bike, she was training for special-needs triathlons(三项全能运动). In a magazine interview, she said, ‘I always knew there was an athlete in me.’”

So far, the foundation has given away45 0 bikes, and that’s just a start. “I do a lot of things. I run a lot of companies,” McLindon says. “But getting these kids their bikes is the most important thing that I do.”

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In my town people like to give smile cards to those who have received help. And the receivers continue to help others. With those cards, people enjoy helping and being helped.

I got some smile cards and used three of them just yesterday!

I used the first smile card when I was getting my dogs some food in a pet store. A man walked up to look at collars (项圈), looking puzzled. He asked me if I knew anything about dogs and collars, which actually I was quite familiar with. I helped him choose one. I hope it would work for his dog. When he said thanks, I handed him a smile card. He smiled and said he would help someone as soon as possible.

That was amazing! Then in a supermarket, when I was paying the bill, a grandma was trying to get her granddaughter out of a basket. I offered to help her, and she said “Yes, please.” Later she told me that she had just had an operation and couldn’t lift things very well. After getting the baby girl out, I handed her my second smile card.

Then I paid for someone’s food in a small restaurant and left behind the third smile card.

I felt very happy yesterday. It was great to help others and leave behind smile cards. I believe that more and more people will get happiness from receiving and giving smile cards.