Why doesn't China implement the bilingual policy?

One reason is that China people still think that they are the center of the world. They were and are the most advanced civilized and developed countries in the world, so many people look down on English, and bilingualism will greatly hurt their national feelings. Second, if China wants to become an advanced country in the world, it is necessary to popularize English, but it is not necessary to be bilingual. For example, Japan, whose national English level is very high and its communication with the world is very active and frequent, has not been made into an official language. After all, it is difficult for a country to change its national habits. Because Singapore and India are both British colonies in history, English has penetrated into their national life, so the official language includes English. In countries like China, Japan and South Korea, English has always been a foreign language, and it is only used when communicating with foreigners. In addition, the main languages in Singapore are Malay (Malay is the national language) and English (the main language), and there are four official languages: Malay, English, Chinese and Tamil. It is only the wishful thinking of China people that Chinese and English are the first two languages in Singapore.