As of June 30, 2018, Taiwan had just 22,332 people with a disyllabic surname (i.e., one that takes two Chinese characters to write). They cover just 0.09% of the population — just less than one in a thousand. This is slightly less than the 0.11 percent of the population of China that has such a family name. Also, in China, by far the most common two-syllable surname is Ouyang; but in Taiwan “Zhangjian” is more seen.
- Two-syllable Chinese family names, Pinyin News, May 15, 2013
- older figures, but with other useful information: 85 percent of Han in China have two-syllable given names: report, Pinyin News, August 10, 2008
- Quánguó xìngmíng tǒngjì fēnxi (全國姓名統計分析). Department of Household Registration, Ministry of the Interior, Taiwan, 2018, p. 28.