The ancestor of Meng's surname is a symbol of illegitimate children. Qingfu is a man of extremely bad conduct, having an affair with his sister-in-law and Mrs. Lu Zhuanggong. Because Ai Jiang had no children, he conspired with Ai Jiang to make the son born to Yi Jiang's sister Shu Jiang the heir of Lu Jun. After Zhuang Gong's death, his brother Ji You set up Zhuang Gong's son, namely Gong Jin, according to Zhuang Gong's wishes. Later, Qingfu sent someone to kill Gou Gong Zili. Therefore, the people of Lu hated him, saying that "it is still difficult for Lu to celebrate his father's death." Qingfu was scared and fled to Juzhou. Ji You bribed Ju to return to Qingfu, and Qingfu committed suicide on his way home. At this time, he served as a friend of Lv Xiang's season, and let Gongsun Ao, the son of the Qing government, inherit the position of the Qing government. Because Qingfu is the eldest of illegitimate children, and the word "Meng" represents the largest in the ranking order of brothers; In order to avoid the crime of regicide, Qingfu's sons were renamed Shi. Later, history was simplified to Montessori. The father of the Qing dynasty bullied the king and the descendants changed their surnames, all of which happened in Shandong, and the capital was Qufu (now Shandong), so this Meng surname came from Shandong.
The population of contemporary Meng surname has reached more than 3.3 million, ranking 73rd in China, accounting for about 0.27% of the national population. During the period of 1000 since the Song Dynasty, the population growth rate of Bangladesh showed a V-shaped trend. At present, the distribution in China is mainly concentrated in Shandong, Henan and Hebei provinces, where the Meng surname accounts for about 46% of the total population. Secondly, it is distributed in Jiangsu, Liaoning, Shanxi and Heilongjiang. These four provinces have concentrated 28% of Meng's population. Shandong is the largest province with Meng surname, accounting for about 2 1% of the total population of Meng surname. The whole country has formed two Meng's gathering areas centered on Hebei and Northeast Lu Yu. During the 600 years since the Ming Dynasty, the degree and direction of population movement in Bangladesh mainly moved back from southeast to Central Plains and North China, especially to Northeast China. The schematic diagram of the distribution frequency of Meng's surname in the population shows that in Shandong, Hebei, Beijing, Tianjin, most of Heijiliao, central and eastern Inner Mongolia, northern Henan, Anhui, Jiangsu and northeastern Shanxi, the proportion of Meng's surname in the local population is generally above 0.48%, and the central region is above 1%. The above coverage area accounts for about 18.4% of the total land area, and about 54% of the population of Mongolia lives. In Henan and most of Shanxi, central Anhui and Jiangsu, northern Hubei, Shaanxi and Ningxia, most of Gansu, northwestern Xinjiang, central and western Inner Mongolia, eastern Liaoning, eastern Jilin and southeastern Heilongjiang, the proportion of Meng's surname in the local population is generally between 0.24% and 0.48%. The above coverage area accounts for about 17.6% of the total land area of Meng, and about 26.5% of the population named Meng lives there.
Edited in April 2020-10.
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