57th International Agriculture Fair held in Paris, France(1/4)

Pigs attend a contest during the opening day of the 57th International Agriculture Fair at the Porte de Versailles exhibition center in Paris, France, on Feb. 22, 2020. The annual fair will last to March 1, 2020. (Photo/China News Service)

Stamps issued on the opening day of the 57th International Agriculture Fair at the Porte de Versailles exhibition center in Paris, France, on Feb. 22, 2020. The annual fair will last to March 1, 2020. (Photo/China News Service)

People visit the 57th International Agriculture Fair on the opening day at the Porte de Versailles exhibition center in Paris, France, on Feb. 22, 2020. The annual fair will last to March 1, 2020. (Photo/China News Service)

Photo taken on Feb. 22, 2020 shows products on display during the opening day of the 57th International Agriculture Fair at the Porte de Versailles exhibition center in Paris, France. The annual fair will last to March 1, 2020. (Photo/China News Service)