1. Chinese The world's most difficult language to learn, there is no one, because Chinese has 15 kinds of tones alone, in addition to many polyphonic characters, homophones, etc. For many foreigners, it is simply unintelligible and difficult to learn.
2. The Greek language Composed of 24 letters, the first 26 letters, later with the addition of vowels and modifications, Greek is one of the oldest languages in the world and is very difficult to learn.
3. Arabic Unlike many languages, which are written from left to right, Arabic is written upside down and is not easy to write. There are also many dialects and pronunciation varies greatly from place to place.
4. Icelandic Icelandic is spoken by just over 300,000 people worldwide, and only in Icelandic itself. As a branch of Germanic languages, Icelandic is also considered one of the most difficult languages in the world.
5. Japanese It has been the official lingua franca of Japan since the Meiji era, but the origin of the Japanese language is still debated, but because there are many Chinese characters in Japanese, it is relatively easy for Chinese people to learn.
6. Finnish As a minority language, the grammar of Finnish is very complex and the words are very long, making it extremely difficult to learn.
7. German It is a language with very different dialects, not only in vocabulary but also in grammar, so even if you are German, you may not be able to communicate with each other.
8. Norwegian The grammar is very variable and the words are difficult to write. Generally speaking, if you learn Norwegian well, then you can learn Swedish and Danish, as there are many similarities.
9. Danish Danish is like a tongue twister, and for many beginners, even pronouncing it correctly is a difficulty.
10. Korean Korean was first evolved from Chinese, and although it is relatively easy for Chinese people to learn Korean, it is just as difficult for foreigners to learn because Korean grammar is still very variable.