Where is the origin of stinky tofu?

The origin of stinky tofu: According to legend, in the eighth year of Kangxi, Wang Zhihe, an Anhui scholar, went to Beijing to catch the exam. His name is Sun Shan. At this time, all the travel expenses were spent, so he had to stay in Beijing to take the next exam. He made tofu when he was a child. In order to make a living, he sold it in Anhui guild hall at that time. One summer, there was a lot of tofu left to sell. He was worried when he saw it. It would be a shame if it was dumped. Then he suddenly remembered that his hometown used them to make tofu brain, but he forgot how to operate it. Just try to cut tofu into small pieces, add salt and pepper and seal it in a jar. After a long time, Wang Zhihe remembered and quickly opened the jar. The stench came to the nose and the tofu turned green. He tasted it curiously, but it was delicious. As a result, stinky tofu in Wang Zhihe became famous.