（05）[English] Marking the boat for find lose sword 刻舟求剑

In the Warring States period，A man from the state of Chu had a sword which he cherished very much. One day when his was crossing a river in the boat, the sword suddenly fell into the water, the man then made a mark on the side of the boat, as the ...the sword following never board, When the boat reached its shoal, he jump from the stamp he maked into the water to look for his sword.
This idiom....for instead of taking changes .... into the current