Is there anyone abroad who can only speak but not write?

Your analysis and understanding are absolutely correct, and you have to take a Chinese class. There is a big difference between spoken and written language, so you are not easy to learn and you can't understand idioms. However, words you don't know in alphabetic characters can be read after learning spelling, unlike words you don't know in Chinese. . Illiteracy is certain, but it is rare in developed countries, because education is free for all, while there are many in poor countries.

The following countries use English as their official or main language.

English is the first language in the following countries and regions: Australia, Bahamas, Ireland, Barbados, Bermuda, Guyana, Jamaica, New Zealand, St. Christopher and Nevis, Trinidad and Tobago, Britain and the United States.

2. English is the main language in the following countries and regions, including Brazil (together with Portuguese), Canada (together with French), Dominica, Saint Lucia and Saint Vincent and Grenada (together with French), Micronesia (Federated States of), Ireland (together with Irish), Liberia (together with African languages), Singapore and South Africa (together with Afrikaans and other African languages).

3. English is the official language of Fiji, Ghana, Gambia, Hong Kong, India, Kiribati, Lesotho, Kenya, Namibia, Nigeria, Malta, Marshall Islands, Pakistan, Papua New Guinea, Philippines, Solomon Islands, Samoa, Sierra Leone, Swaziland, Tanzania, Zambia and Zimbabwe.

Look, those poor countries announced by the United Nations, as well as Indians, are illiterate. They are happy to be born in China.