Yesterday I received a phone call from son in which he asked about my injured foot and his grandma. This was the second time he has specially shown concern to us by phone. The first was a fortnight ago. I'm satisfied that son has become mature gradually. He has been studying at a high school in our provincial town over one and a half years, which provides him with room and board. At first I often went to see him. Then I called him up by telephone at weekends. Now I seldom visit him or ring him up for he has been quite used to the life there. Moreover, I hate to disturb him from time to time.