"Hehe" was first seen in historical materials, and it came from The Book of Jin, Ji Jilong. During the Sixteen Kingdoms Period, Taizi Stone of Shi Hu, the Emperor of the Later Zhao Dynasty, was jealous of his brother Shi Tao's love and sent an assassin to kill him. Before the funeral, Xuan Shi "took a vegetarian car, from thousands of people, mourned for the Tao, didn't cry, bluntly said' Hehe', and made him laugh." Since it is "laughing", "hehe" is of course a smile. The post-Zhao Dynasty was founded by the Jie people, so "Hehe" was originally a kind of laughter popular in the Hu people. After entering the Tang Dynasty, the royal family of the Tang Dynasty was originally a descendant of the Hu people, and adopted an inclusive national policy, which led to the brilliant prosperity of the Tang Dynasty, and the laughter of the Hu people naturally spread to the Central Plains. Three views on the word "harmony" in the whole Tang poetry. Hanshan's "330 and 56": "Laugh and be cheerful, cry and be criticized." Wei Zhuang's Immortal: "Drunk and drunk, shocked and asleep, laughing and laughing, laughing long, life can be geometric." Or Wei Zhuang's "Bodhisattva Man": "When you meet wine, hehe, life can be geometric." These usages are 200 to 600 years earlier than Su Dongpo. Where is Su Dongpo worthy of "Hehe" intellectual property rights? Check the original post titled "A letter with the word" Hehe "begins with Su Dongpo". The above four situations are not used for letters, but even so, the use of "hehe" in letters does not originate from Su Dongpo. As early as three years before Su Dongpo was born (Su Dongpo was born in 1037), Ouyang Xiu began to "hehe" in his letters. In the first year of Jing You (1034), Ouyang Xiu wrote in "A few roads with Wang": "Several ancestors left first: Duan Jia arrived, wrote poems, and wrote poems. Later in Dongshan, I saw poetry again. He is diligent and thoughtful. Sheng Yude's poems were overjoyed, and he claimed to be a person who helped the party to become prosperous, and he was slightly hungry. I haven't written a few verses for this poem, so it's clear that I'm crazy. Since ancient times, good singers have benefited from poverty, so why not? Hehe. " When Su Dongpo was just three years old (1039), Ouyang Xiu wrote "Hehe" in his letter: "Sun Shu noticed that he was eager to see you every day and had taken precautions. Does he dare to show it? The chaos in Mouzo came at the right time, hehe. " When Su Dongpo was eight years old (1044), Ouyang Xiu remained unchanged: "The inscription was too lazy to see the governor, and it was given soon, only for those who needed to invite good deeds." Ha ha. "At this time, Su Dongpo was still studying with his father. Where did he learn "hehe"? In the Song Dynasty, the word "Hehe" was very popular, especially in the letters of celebrities. Of course, its frequency can't keep up with today's QQ and MSN chat, and you can "hehe" with your fingers, but the early origin of "hehe" is beyond people's imagination. People often have a misunderstanding that most of the buzzwords used now are modern patents, but they are not. The ancient population has long said the same thing as us, and "Hehe" is the best example. Ha ha!