The difficulty of biology is mainly proper nouns. It's hard to remember. You have to spend a lot of time memorizing these words. It can be said that it is the most difficult subject for China students.

Secondly, English. MUU has two English subjects, mainly writing, including watching movies and feeling after reading.

Mathematics and chemistry are not difficult, as long as you understand the topic, you can basically do it, which is similar to the content of domestic high schools.