<p class="ql-block">My son celebrated his 14th birthday yesterday. He has already been taller than his father, which makes me happy firstly but a little down later.For a long time, I was happy that my son was old enough to go to school and come home from schol by himself.But this birthday makes me realise that this little bird will fly awsy from our home and me.Many years ago, some of my old colleges told me that not the children could not leave their parents but these parents could not leave their children.At that time, I was too young to understand it.How time fies! I can understand it now! Indeed, I am not sure which word is appropriate to describe my feelings now because it is so complicated.</p>