context: China is a country where 70% of the population is engaged in agriculture. For this reason, the local administration is divided into four vertical structures. The top floor is called the first-level administrative division and divides the vast territory of the People's Republic of China into horizontal divisions in 23 provinces, five boroughs, and four direct jurisdictions. The Special Administrative Region is not strictly a first-class administrative district, but it is treated substantially the same.
question: How many surnames are there in China?
answers.text: 23