they sometimes say to me carefully that,oh he is getting old, so forgive him....so I have been thinking about what they said with caution for many times...
if he is decades younger he could be a rich man. As far as i know, when he was younger he did not learn much from a teacher and didn't get trained a lot but he could figure out ways to design and create things with his deft hands. Too bad so sad that I only inherit his bad temper.