Certainly you have already guessed: the most common surname in Germany is "Müller".
One of 180 Germans is called "Müller".
In China almost one in ten carries the common name "Li" (æŽ);
and almost half of the Chinese people carries one of the ten most common surnames.
There are several reasons.
On the one hand, in Germany there are about 300,000 different last names, in China there are only about 4,100.
This relatively low figure is due to the fact that there is a total of "only" 30,000 characters in China.
Of these, however, not all are suitable as a family name and only a few, particularly "noble" surnames have more than one syllable.
In addition, many Chinese names are already thousands of years old and were thus spread over a long period.
The name "Wang" (王) is the second most common surname in China, meaning "King / royal".