What is the music of China Ping An’s advertisement during CCTV’s weather forecast?

Canon

The author is German Johann Pachelbel (1653 ~ 1706), who was Bach’s teacher. However, some people say that an unknown composer at the time pretended to be the work of the then-famous Pacabel in order to sell the piece. A form of polyphonic music composed purely of imitation. When each part that enters successively plays (sings) a melody on the same or different pitches from beginning to end, it is called a canon. The first voice to appear is called the opening sentence or main sentence, and the subsequent voices are called response sentences or reply sentences. (Canon and Gigue in D major) by Johann Pachelbel, also known as "Pachelbel's Canon".