Once upon a time, a family built a new house. Many neighbors and relatives came to congratulate them, praising the house's construction. The owner was very pleased.

However, one guest sincerely advised the owner: "The chimney in your kitchen goes straight up from the stove. This makes it easy for sparks from the stove to fly out and land on the roof, potentially causing a fire. You'd better change it by adding a curved passage between the stove and the chimney. That would be much safer." (This is '曲突', meaning 'curved chimney'). After a pause, the guest added, "You also have a lot of firewood piled in front of the stove opening, which is very dangerous. It's better to move it further away." (This is '徙薪', meaning 'move firewood').

The owner, however, thought this guest was deliberately trying to find fault and embarrass him. He was quite unhappy and naturally did not take the advice seriously.

A few days later, a fire indeed broke out in the new house due to the kitchen's flaw. Neighbors from all around worked together, putting in their best efforts to put out the fire. The owner, to thank those who helped, hosted a banquet. He invited those who had been burned '焦头烂额' (scorched head and burnt forehead) during the rescue to sit at the place of honor. But he did not invite the guest who had given the crucial advice. This is summarized by the saying: '焦头烂额座上宾，曲突徙薪靠边站' (Those with scorched heads and burnt foreheads are honored guests, while those who advised bending the chimney and moving firewood are sidelined).

At this point, someone reminded the owner: "You have invited all those who helped fight the fire, but why haven't you invited the person who suggested rebuilding the chimney and moving the firewood? If you had listened to that guest's advice, this fire wouldn't have happened. Now, we are inviting guests based on their contributions, so how can you not invite the person who gave you critical advice, but instead invite those who got their heads scorched and foreheads burnt during the firefighting to sit at the place of honor?"

Hearing this, the owner suddenly realized his mistake and quickly invited the guest who had given the initial advice.

Later, people derived two idioms from this story: '曲突徙薪' (qū tū xǐ xīn) and '焦头烂额' (jiāo tóu làn é). '曲突徙薪' is used to metaphorically advise preparing early and preventing trouble before it happens, while '焦头烂额' describes being in an extremely embarrassing, distressed, or overwhelmed situation.