"This Pen borrowing" actually has a hidden meaning.
In Chinese, there have a idiom called ﾋ?ｪ笔ﾅ津ｹ销 (yi bi gou xiao), literally means that "Cancelled withone stroke of the pen", real meaning is "To forget the past affair" I guessed this is what Koizumi think, Wen should get it......
But, for me, if wanna forget all the past, Japan should show his sincerity first, not going to pray those war crimes oftenly.