Is there a high rate of duplicate names in China?

1, many people talk less. China has a population of1300 million, but there are only about 2,500 commonly used Chinese characters. Of these 2,500 words, I'm afraid there are less than 2,000 that can be used to take names, except those that are derogatory or not listened to. According to the calculation of two thousand words, if you take a single name, the probability of duplicate names is one in two thousand. Even if there are duplicate names, the rate of duplicate names has reached one in four million. For example, there are 290,000 people named Zhang Wei in China, so you can imagine how high the rate of duplicate names is in China.