I'm a little confused about English, which is quite different from Chinese writing.

This involves the use of "it". It is used as a pronoun in many ways, one of which refers to the weather. "it's sunny today" is actually the abbreviation after we skillfully use Chinese, and the whole writing should be "It's sunny today", which translates into English. But as mentioned above, foreigners can use it to refer to the weather, so today is sunny.

I am a mobile phone party. If you ask questions on the computer, you may not be able to reply in time because you can't see them. Please understand.