What’s the story behind Quanjude’s development into a time-honored brand?

·Why is the word "德" missing one horizontal line? At that time, Yang Quanren, the founder of Quanjude, asked a scholar named Qian Zilong to inscribe a plaque. This plaque has withstood many ups and downs and has been hanging for more than 130 years. But I wonder if you have noticed: the word "德" on the Quanjude plaque is missing one horizontal line. Why is this? Some people say that Boss Yang invited Qian Zilong over at that time, and the two drank happily. Yang Quanren learned that Qian Zilong's calligraphy was very good, so he immediately took out his pen, ink, paper and inkstone and asked Qian Xiucai to write an inscription. Because Qian Xiucai drank two more drinks, he was in a daze and accidentally forgot to write the word "virtue" across the line. Some people say that when Yang Quanren started his business, he hired 13 clerks in one day, plus 14 people in his own company. In order to allow everyone to work with peace of mind and work together as one, Qian Xiucai was asked to write one less horizontal line to express that everyone should not have a knife in their hearts. Hearing this, you may ask: Doesn't adding a horizontal line mean that you are single-minded? Of course these are all speculations and legends. What's the real reason? It turns out that as early as more than a thousand years ago, "virtue" was written like a polyphonic character, with or without a horizontal line. This can be confirmed by the ink marks of famous calligraphers of the Tang, Song, Yuan, Ming and Qing dynasties. For example, the word "De" in the "University Stele" written by Emperor Kangxi of the Qing Dynasty, which is now erected in the Confucian Temple of the Imperial College in Beijing, does not have a single horizontal line; another example is the word "De" written by Zheng Banqiao, a Qing Dynasty painter who lived at the same time as Quanjude was founded. Some have a horizontal line, and some do not. In addition, we can also examine the word "virtue" from ancient Chinese coins. For example, the "Jingde Tongbao" cast during the Zhenzong period of the Northern Song Dynasty (AD 1004) does not have a horizontal line in the character "德", while the "Xuande Tongbao" cast in the Ming Dynasty's Xuanzong period (AD 1426) has a horizontal line in the character "德". . From the above analysis, we can draw this conclusion: In the past, there were two ways of writing the word "德", either with a horizontal line or without a horizontal line. Both ways of writing are correct. In order to maintain the original historical appearance of its plaques, Quanjude has always lost one horizontal line of the word "德" on its plaques.