Patterns 古语有云 "只要有恒心 铁杵磨成针" ...

Patterns 

古语有云 "只要有恒心 铁杵磨成针" ...

The shadows in this parking lot are constantly trying out this zig-zag drawings at different times of the day ... and doing it day after day.

Finally it at this time of the day ... Practice does make it Perfect ...