刻舟求剑[kè zhōu qiú jiàn]：mark/boat/find/sword to mark the boat in order to find the lost sword. 乘船chéng chuán：take a ship/boat 渡江dù jiāng：cross a river 佩剑pèi jiàn：a double-edged sword;walking sword 记号jì hào：mark;sign signal;symbol This idiom satirizes those who instead of taking changed circumstances account