The Penguin Publishing Group has just celebrated its 70th birthday. From 1935 to the present 70 years, Penguin has gone through the ups and downs of the publishing industry, still always adhere to the group founder Ellen · Wren put forward the purpose of "selling cheap quality paperback books". Today, Penguin Books is published and sold in 62 languages around the world, and the cute little Penguin LOGO is everywhere.