Handbook (てちょぅ), also known as Handbook, refers to a notebook used to take notes, which can record one's life, mood, reading experience, financial expenditure and so on through painting, writing, collage and other forms. In the early days, a manual was a small notebook used to record and manage the schedule, similar to a notebook. With the development and creation of people, the use of manuals has become more and more elaborate and rich, which can help people manage themselves and plan their lives. Check your account first every morning. If you want to invite a Japanese friend to go out for dinner or travel, the other person will usually take out a small notebook, turn to a page and quickly write down the agreed time and place. On the subway, it is often seen that someone takes out a small notebook from his bag to read or record. This kind of book is called "Handbook", and almost everyone in Japan has one. In the reporter's opinion, a notebook is actually a notebook, but for the Japanese, its significance goes far beyond this. Most of the manuals are beautifully made, with calendars and pens, which can hold some business cards and pieces of paper. Different page divisions have super sorting function to meet different types of needs. For example, the housewife's handbook has a special place to post invoices to record income and expenses and help them live a frugal life. The handbook can not only remind yourself to remember the birthdays and appointments of family and friends, but also arrange your daily work. Many people even regard them as short diaries.