回帖：老师傅罗志正How are you? About 40 years ago I was a kid who learning the electronics and vacuum tubes radio in your apartment. I still remember that you set-up little light bulbs (6Vac) on top of the stair for walking safety. The important and funny things was that the meter will never account this micro power and never worry the pay bill even 24 turns on. I appreciate for all you tutoring and sharing your golden experience in my teen age. Now I am a engineer and have worked in silicon village over 25 years.Sorry, I can not write Chinese with key board. Hopefully some one will help translating to you in Tai-Shan.However I will contact with you just matter of the time.Thanks for 75one-taishan and posting this great pictures