Diary refers to the carrier used to record its contents. As a style, it belongs to the narrative practical writing. The content of the diary comes from our observation of life. So, you can write notes, people, things, scenery and activities. Everything you do, see, hear and think in a day can be the content of a diary. Diary also refers to a daily notebook or a record of things you encounter and do every day. It is also the name of poetry and one of Haizi's representative works.