sigh, I have got a story to tell.
I went to school with mah bike today... I need to oil the darn chains and my brothers has been the last person driving it.
I started my trip, on the morning, took 45 mins. you know why, when it was only 5 min walk to my school, the darn saddle was too low, the same trip back, I had fixed the height, took only ~20mins... aaa... why did I lose my travel ticket!!