[chuán shuō]

So the story goes.
傳說如此。

That's only hearsay.
這不過是傳說而已。

folklore; popular legend; folk tale
民間傳說

According to the old tradition， Romulus was the founder of Rome.
按照古老的傳說， 羅穆盧斯是古羅馬的建國者。