In the early 90s, the Chinese used the ancient abacus 🧮 statistics. Cash register work. At that time, US President Clinton visited China and was interested in this ancient people's use of abacus. 
Discussion
In the 90s , Chinese people communicated by writing letters. No phones, no computers. Many shops use abacus 🧮 to register cash.
This abacus 🧮 will be used as long as the Chinese graduate from primary school. Primary school mathematics courses have special teaching using abacus 🧮 statistics.