a bamboo tube used in former times to blow air onto a fire to help it burn

literally to blow a fire while the wind is blowing; to take advantage of favorable circumstances or an opportunity to get things done with little effort; to follow the lead of others to achieve one's ends

to draw in the wind to blow on a fire; used to describe stirring up trouble or inciting people so that a situation gets worse

to blow on a fire with the wind; to use a favorable situation to do something with little effort