The source of the croissant is in 1683, the Turkish army invaded the Austrian Vienna, but it was not attacked for a long time the Turkish generals had a plan, digging a tunnel to the city, coincidentally, their cranial spatula chiseling Shi's voice was grinding flour all night long, kneading the dough of the baker found that, as a result, the Turkish army returned to the city without success. In honor of this baker all Vienna bakers, the bread will be made into the flag of the Turkish army on the curved moon shape, to indicate that they are the first to see the Turkish army.