Yuan Yida
Encyclopedia
Yuan Yida is a researcher
Researcher
A researcher is somebody who performs research, the search for knowledge or in general any systematic investigation to establish facts. Researchers can work in academic, industrial, government, or private institutions.-Examples of research institutions:...

 from the Institute of Genetic and Developmental Biology at the Chinese Academy of Sciences
Chinese Academy of Sciences
The Chinese Academy of Sciences , formerly known as Academia Sinica, is the national academy for the natural sciences of the People's Republic of China. It is an institution of the State Council of China. It is headquartered in Beijing, with institutes all over the People's Republic of China...

. He is a leading researcher on Chinese surnames in mainland China
Mainland China
Mainland China, the Chinese mainland or simply the mainland, is a geopolitical term that refers to the area under the jurisdiction of the People's Republic of China . According to the Taipei-based Mainland Affairs Council, the term excludes the PRC Special Administrative Regions of Hong Kong and...

, and has been working on statistical
Statistics
Statistics is the study of the collection, organization, analysis, and interpretation of data. It deals with all aspects of this, including the planning of data collection in terms of the design of surveys and experiments....

 studies of surname distribution in the People's Republic of China
People's Republic of China
China , officially the People's Republic of China , is the most populous country in the world, with over 1.3 billion citizens. Located in East Asia, the country covers approximately 9.6 million square kilometres...

 over the past two decades. He led the research on an updated, 2006 version of the Hundred Family Surnames
Hundred Family Surnames
The Hundred Family Surnames is a classic Chinese text composed of common surnames in ancient China. The book was composed in the early Song Dynasty. It originally contained 411 surnames, but was later expanded to 504. Of these, 444 are single-character surnames, and 60 are double-character surnames...

, a text of popular surnames originally published in the Song Dynasty
Song Dynasty
The Song Dynasty was a ruling dynasty in China between 960 and 1279; it succeeded the Five Dynasties and Ten Kingdoms Period, and was followed by the Yuan Dynasty. It was the first government in world history to issue banknotes or paper money, and the first Chinese government to establish a...

, encompassing 4100 surnames from 296 million individuals in 1110 counties.

Yuan Yida was born in 1947 in Shanghai
Shanghai
Shanghai is the largest city by population in China and the largest city proper in the world. It is one of the four province-level municipalities in the People's Republic of China, with a total population of over 23 million as of 2010...

, tracing his ancestry to Fenghua
Fenghua
Fenghua is a county-level city in the north of Zhejiang province, China. It is under the jurisdiction of Ningbo prefecture-level city. The city and its administrative hinterlands has a population of over 480,000....

, Zhejiang
Zhejiang
Zhejiang is an eastern coastal province of the People's Republic of China. The word Zhejiang was the old name of the Qiantang River, which passes through Hangzhou, the provincial capital...

. He spent much of his youth in Ningbo
Ningbo
Ningbo is a seaport city of northeastern Zhejiang province, Eastern China. Holding sub-provincial administrative status, the municipality has a population of 7,605,700 inhabitants at the 2010 census whom 3,089,180 in the built up area made of 6 urban districts. It lies south of the Hangzhou Bay,...

, before moving to Beijing
Beijing
Beijing , also known as Peking , is the capital of the People's Republic of China and one of the most populous cities in the world, with a population of 19,612,368 as of 2010. The city is the country's political, cultural, and educational center, and home to the headquarters for most of China's...

 and attending Beijing University. Between 1988 and 1992 he conducted research at Stanford University
Stanford University
The Leland Stanford Junior University, commonly referred to as Stanford University or Stanford, is a private research university on an campus located near Palo Alto, California. It is situated in the northwestern Santa Clara Valley on the San Francisco Peninsula, approximately northwest of San...

. In mainland China he has published more than 30 articles and two monograph
Monograph
A monograph is a work of writing upon a single subject, usually by a single author.It is often a scholarly essay or learned treatise, and may be released in the manner of a book or journal article. It is by definition a single document that forms a complete text in itself...

s.

In 1987, he estimated there were between 12,000 to 13,000 surnames in China.

He demonstrated that two individuals with the same surname in China could have received that surname from one of several different surnames in an earlier era, casting doubt over the notion that those who share the same surname today would be considered "belonging to the same family five hundred years ago".

He has remarked that fortune-telling
Fortune-telling
Fortune-telling is the practice of predicting information about a person's life. The scope of fortune-telling is in principle identical with the practice of divination...

 based on surnames exists in China, labeling it "nonsense". He claimed that research on surnames may invoke patriotic feelings in overseas Chinese
Overseas Chinese
Overseas Chinese are people of Chinese birth or descent who live outside the Greater China Area . People of partial Chinese ancestry living outside the Greater China Area may also consider themselves Overseas Chinese....

by drawing them closer to other Chinese with the same surname.
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