How old is the mouse this year?

Does the subject want to ask: "How old will the mouse be in 2020?" The rat born in 2020 is 4 years old in 2024 and 5 years old in nominal age.

The mouse is the first of the traditional Chinese zodiac in China. This is also a cultural custom. The years of the genus are: 2044, 2032, 2020, 2008, 1996, 1984, 1972, 1960, 1948. The perpetual calendar is the oldest solar calendar in ancient legends of China. The name of perpetual calendar comes from a man named Wannian in Shang Dynasty. He is the editor of this kind of calendar. In order to commemorate his achievements, he named this calendar "perpetual calendar". Modern perpetual calendar is an annual calendar that records the dates of specific solar and lunar calendars within a certain time range (for example, 100 years or longer), which is convenient for people in need to query and use.