Yang Quanren (also known as Quanren, whose real name is Shoushan) is from Yangjiazhai, Hebei Province. When he first arrived in Beijing, he sold raw chickens and ducks in Qianmenwai Meat Market Street. Yang Quanren has a detailed understanding of how to sell ducks, and his business is getting more and more prosperous. He lived frugally and saved more and more money like a snowball. Every day when Yang Quanren goes to the meat market to set up a stall to sell chickens and ducks, he has to pass by a dried fruit shop called "Dejuquan". Although the shop's signboard is eye-catching, its business has been declining. In the third year of Tongzhi (1864), the business collapsed and was on the verge of bankruptcy. The shrewd Yang Quanren seized this opportunity and spent his many years of savings to buy the "Dejuquan" store.

Now that you have your own shop, what font size should you choose? Yang Quanren invited a Feng Shui master to discuss the matter. The Feng Shui master walked around the shop twice, then suddenly stood still, twirling his beard and said: "Ah, this is really a Feng Shui treasure land! Look at the two small alleys on both sides of the shop, they are like two sedan poles. In the future, building a building will be like an eight-carriage sedan, and the future will be limitless!" Mr. Feng Shui rolled his eyes and said, "However, this shop was very unlucky in the past, and it is difficult to get rid of its bad luck. Reversing the old name of "Quan", it is called "Quanjude", so that you can avoid bad luck and embark on a smooth road." Mr. Feng Shui's words made Yang Quanren smile. The name "Quanjude" is exactly what he had in mind. Firstly, his name has the word "Quan" in it. Secondly, "Jude" means to gather virtues, so he can flaunt his virtues in doing business. So he named the store "Quanjude". Then he invited Qian Zilong, a scholar who was very accomplished in calligraphy, to write the three characters "Quanjude" and made it into a gold plaque to hang on the lintel. The words were written vigorously, powerfully, and eye-catchingly, adding a lot of color to the shop.

Under Yang Quanren’s careful management, Quanjude’s business is booming. Yang Quanren is smart and capable. He knows that if he wants his business to prosper, he must rely on a good chef, a good waiter, and a good shopkeeper. He often hangs around various roast duck shops, exploring the secrets of roast duck and looking for the masters of roast duck. When he learned that there was a master chef named Sun in the Jinhua Pavilion, which specialized in cooking roast ducks for the palace, and he was very skilled in roasting ducks, he tried every means to make friends with him. They often drank and played chess together, and their relationship became closer and closer. Master Sun was finally persuaded by Yang Quanren, and he came to Quanjude with a generous offer.

Quanjude hired Master Sun, which means he has mastered all the techniques of Qing palace hanging oven roast duck. Master Sun changed the original oven into a hanging oven with a large furnace height and a deep and wide furnace. It can roast more than a dozen ducks in one oven. It can also roast ducks while roasting them. The duck he roasted was beautiful in appearance, plump and plump, bright in color, jujube in color, crispy in skin and tender in meat, delicious and fragrant, fat but not greasy, thin but not woody. Quanjude Roast Duck won the title of "Beijing Master's Delicious Food". Yuya" reputation.