What is behind firecrackers saying goodbye to the old year?

Firecrackers bid farewell to the old year, and red plum blossoms ushered in the new year.

Firecrackers bid farewell to the old year and flowers bloom in the new year.

Firecrackers always change new peaches for old ones.

Firecrackers bid farewell to the old year and Spring Festival couplets welcome the new year.

Firecrackers bid farewell to the old year and welcome the new year.

Firecrackers bid farewell to the old year, and generate sang to welcome the new year.

Firecrackers bid farewell to the old year and the spring breeze ushered in the new year.

Firecrackers bid farewell to the old year and welcome the new year.

Firecrackers bid farewell to the old year and welcome the new year.

Firecrackers bid farewell to the old year and celebrate the new year!