Secret Again???!!

Ok, I've officially watched "Secret" a 2nd time. This time round, I watched it online.. haha lol. Just finished with it. For those interested, the links are below. About 25 mins each link.

Part 1: http://www.tudou.com/programs/view/07LBuUXw9D0/
Part 2: http://www.tudou.com/programs/view/1jb456AqeZE/
Part 3: http://www.tudou.com/programs/view/N4HJ-Y_lc4w/
Part 4: http://www.tudou.com/programs/view/N4HJ-Y_lc4w/

Some questions I had when watching a 2nd time:
1. When Xiao Yu was writing on her table with the liquid paper, she was using those modern liquid paper...with the metal head as a dispenser for the white paint. 1979 where got use such things??? I remember even in the 80s, those liquid papers still came in a bottle much like a nail polish. i.e. you used a brush type of applicator!! And not a metal head roller mah...
Get what I mean? haha lol..

2. After she wrote those things on the table, then she died right? Or didshe only pass out?

3. How come after he played the piano piece...can zun zun go back to 1979? And not 1978 or 1977 or 1980 or 1981?

4. There was a scene when they were in the stands cheering for the rugby team. How come Xiao Yu could see him and vice versa, he could see her? If she came from the past, he has to be the 1st person she laid her eyes on so that he can see her. She's so clever to lay eyes on him 1st? Amongst so many others in the stands?

5. Is there supposed to be something significant about the CD shop & its attendant? Hmm mm...apart from the old Chinese song that was playing there lah..

Tink that's all for now...
Maybe more questions might pop up after watching a 3rd time...hiakzz...