Sentences describing the strong back of kindergarten son

The child went to kindergarten, and I was happy and a little sad to see his small and strong back. After being away all day, the child sees you running happily, jumps into your arms and says, "Mom, I miss you." At that moment, holding a child is like holding the whole world. How unforgettable it is that a 6-year-old child finally goes to primary school. On the first day after coming back from school, when he was ready to go to bed at night, he said to you, "From today on, I will be bitter until I am 60 years old!" " "His life has turned a new chapter, but I didn't expect that this is also the first step for children to leave us. Children are used to being apart from you for one day and like to go to school every day. Even, sometimes they will say, "Mom, it's so boring at home. I have no children to play with. "