<Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2017) (Learn how and when to remove this template message) </Td> </Tr> <P> "What's that got to do with the ...?" is an expression denoting an irrelevance or non sequitur in the current discussion . </P> <P> A common form, what does that have to do with the price of tea in China?, is a retort to an irrelevant suggestion . This facetious usage implies that the topic under discussion might as well be the price of tea in China for all the relevance the speaker's suggestion bears on it . It has been said that this expression has stemmed from economists, who describe everything economic as affecting everything else, trying to find an expression which denotes the farthest logical connection from their current economic focus, in a sort of butterfly effect . In this way, the price of tea in China was used to denote the farthest possibility . It can also be used to denote an irrelevant topic . </P> <P> Another explanation of the phrase's origin is that in the 19th century the price for tea in England was the highest when the first ship with the newly harvested tea from the tightly controlled Chinese markets came in . So for the ship owners it was important to be as fast as possible back to England with the load, otherwise the cost of the passage might not be recovered from the sale of the tea . Thus there were real races (the tea clipper races) where the sail ships managed to travel the whole distance from China to England in about 80 to 90 days . </P>

Where does the saying price of tea in china come from