short time work at plant

this afternoon I went to NO.1 welding workshop and have been working there for about one and an hours there, I could felt the tiredness and tediousness of that work, many young people have been working there for very long time, I can easily notice their tiredness towards their jobs, simple repeating , again and again.
nevertheless my body felt good when I did that physical work. I need exercise !
Lei bao saw me when I was there, he came and talked some matter related to computer OS.he really has a very simple & pure heart!