A chef prepares lobsters for customers in Long Beach, Los Angeles County, the United States, Sept. 8, 2019. The 2019 Long Beach Original Lobster Festival was held here on Sept. 6 to 8. (Photos: Xinhua)

Chefs prepare lobsters for customers in Long Beach, Los Angeles County, the United States, Sept. 8, 2019. The 2019 Long Beach Original Lobster Festival was held here on Sept. 6 to 8.

A customer poses for photos with a lobster in Long Beach, Los Angeles County, the United States, Sept. 8, 2019. The 2019 Long Beach Original Lobster Festival was held here on Sept. 6 to 8.

A girl tastes a lobster at the 2019 Long Beach Original Lobster Festival in Long Beach, Los Angeles County, the United States, Sept. 8, 2019. The 2019 Long Beach Original Lobster Festival was held here on Sept. 6 to 8.

Chefs prepare lobsters for customers in Long Beach, Los Angeles County, the United States, Sept. 8, 2019. The 2019 Long Beach Original Lobster Festival was held here on Sept. 6 to 8.

A girl looks at a lobster in Long Beach, Los Angeles County, the United States, Sept. 8, 2019. The 2019 Long Beach Original Lobster Festival was held here on Sept. 6 to 8.

Chefs prepare lobsters for customers in Long Beach, Los Angeles County, the United States, Sept. 8, 2019. The 2019 Long Beach Original Lobster Festival was held here on Sept. 6 to 8.

A woman wears a lobster-shaped hat in Long Beach, Los Angeles County, the United States, Sept. 8, 2019. The 2019 Long Beach Original Lobster Festival was held here on Sept. 6 to 8.

A customer shows meal of lobsters at the 2019 Long Beach Original Lobster Festival in Long Beach, Los Angeles County, the United States, Sept. 8, 2019. The 2019 Long Beach Original Lobster Festival was held here on Sept. 6 to 8.