As a hairdresser for the first time It is more expensive to have a haircut for my son in the USA than in China. It costs about $18 to have a haircut for teenagers. While in China it is only $3. You have to make an appointment in advance with your hairdresser in the USA but in China you don’t need to do so . When I was back to China last month , I talked with my sisters about haircut in the USA. My brother-in-law sent me a set of haircut tool .He told me it's easy to have a haircut with it. He always cuts his son's hair with this “smart” tool since his son was born. His son is 3 years now. To my surprise, he can cut his hair himself only with the help of a mirror. He showed me how to control the tool. It's so easy .There are three kinds of auto-comb with the tool that helps you to control the different length of hair. As you know, It’s not easy to persuade a 13-year-old boy to have his hair cut , No matter how long his hair has been. How can I persuade him to have his hair cut by me? Yesterday, I saw him playing games with computer. He is allowed to play games 30 minutes per day in summer holidays. I think I’m a little bit evil. I asked him if he wanted to play games for one hour, He said “of course”. Then I smiled and asked him to have his hair cut with the smart tool . He hesitated for a while. Finally he couldn’t refused . It’s too attractive to say no. Oh, It’s the first time I will be a hairdresser! I looked his head up and down and decided how to start. I started from the top of his head. I don’t want to change a lot of the shape of his hair. It’ll be enough to cut a little bit shorter. At first everything was seemed to be ok. I cut his hair carefully . Perfect, looking the hair dropping down, I was so proud of myself. The most important is not saving money but also having the ability to be a hairdresser! I was singing in my heart happily . I was too happy to forget I was cutting hair.My god, I made a mistake of estimating the length of hair. There was a rub of hair cut too short. It’s so ugly. I was shocked. What should I do? At last my son looked at himself in mirror sadly and said:” Mom, My heart is breaking!”