Competitors participate in a fencing competition during the 51st Fieldays in Hamilton, New Zealand, June 12, 2019. Fieldays NZ, the largest agriculture expo in the Southern Hemisphere, kicked off in Hamilton on Wednesday.

A competitor participates in a fencing competition during the 51st Fieldays in Hamilton, New Zealand, June 12, 2019. Fieldays NZ, the largest agriculture expo in the Southern Hemisphere, kicked off in Hamilton on Wednesday.

Competitors participate in a fencing competition during the 51st Fieldays in Hamilton, New Zealand, June 12, 2019. Fieldays NZ, the largest agriculture expo in the Southern Hemisphere, kicked off in Hamilton on Wednesday.

Competitors participate in a fencing competition during the 51st Fieldays in Hamilton, New Zealand, June 12, 2019. Fieldays NZ, the largest agriculture expo in the Southern Hemisphere, kicked off in Hamilton on Wednesday.

A competitor participates in a fencing competition during the 51st Fieldays in Hamilton, New Zealand, June 12, 2019. Fieldays NZ, the largest agriculture expo in the Southern Hemisphere, kicked off in Hamilton on Wednesday.

A competitor participates in a fencing competition during the 51st Fieldays in Hamilton, New Zealand, June 12, 2019. Fieldays NZ, the largest agriculture expo in the Southern Hemisphere, kicked off in Hamilton on Wednesday. (Photos: Xinhua)

A competitor participates in a fencing competition during the 51st Fieldays in Hamilton, New Zealand, June 12, 2019. Fieldays NZ, the largest agriculture expo in the Southern Hemisphere, kicked off in Hamilton on Wednesday.

A competitor participates in a fencing competition during the 51st Fieldays in Hamilton, New Zealand, June 12, 2019. Fieldays NZ, the largest agriculture expo in the Southern Hemisphere, kicked off in Hamilton on Wednesday.

Competitors participate in a fencing competition during the 51st Fieldays in Hamilton, New Zealand, June 12, 2019. Fieldays NZ, the largest agriculture expo in the Southern Hemisphere, kicked off in Hamilton on Wednesday.

Competitors participate in a fencing competition during the 51st Fieldays in Hamilton, New Zealand, June 12, 2019. Fieldays NZ, the largest agriculture expo in the Southern Hemisphere, kicked off in Hamilton on Wednesday.

Competitors participate in a fencing competition during the 51st Fieldays in Hamilton, New Zealand, June 12, 2019. Fieldays NZ, the largest agriculture expo in the Southern Hemisphere, kicked off in Hamilton on Wednesday.