Pan Guijuan helps her 70-year-old husband Ding Guofan to put on clothes at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The old couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Ding Guofan, a 70-year-old farmer, and his wife Pan Guijuan climb mountain to reach their Chinese torreya fields at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Ding Guofan (L), a 70-year-old farmer, his wife Pan Guijuan, and his son pose for a group photo at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The old couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Ding Guofan, a 70-year-old farmer, and his wife Pan Guijuan stay at a house above a cave used to store the Chinese torreya nuts at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The old couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

A clock is seen at home of Pan Guijuan and her 70-year-old husband Ding Guofan at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The old couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Ding Guofan, a 70-year-old farmer, and his wife Pan Guijuan walk on the mountain to reach their Chinese torreya fields at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The old couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Ding Guofan, a 70-year-old farmer, and his wife Pan Guijuan pose for a group photo in their Chinese torreya fields on the mountain at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The old couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Pan Guijuan shows a picture of her and her husband Ding Guofan and their grandson 15 years ago at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The old couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Pan Guijuan and her 70-year-old husband Ding Guofan stand at the entrance of a cave used to store the Chinese torreya nuts at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The old couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Pan Guijuan and her 70-year-old husband Ding Guofan peel the Chinese torreya nuts at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The old couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Ding Guofan, a 70-year-old farmer, and his wife Pan Guijuan check the crops planted by themselves on the mountain at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The old couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Ding Guofan, a 70-year-old farmer, and his wife Pan Guijuan work beside a reservior built by themselves on the mountain at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Pan Guijuan helps her 70-year-old husband Ding Guofan to stick plaster to alleviate pain at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The old couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Ding Guofan, a 70-year-old farmer, fetches water to wash his face at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The water was delivered by facilities made by the old couple themselves. The couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Pan Guijuan and her 70-year-old husband Ding Guofan peel the Chinese torreya nuts at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The old couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Pan Guijuan and her 70-year-old husband Ding Guofan stand in a cave used to store the Chinese torreya nuts at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The old couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Electricians help Pan Guijuan and her 70-year-old husband Ding Guofan to transform electric wires in a cave used to store the Chinese torreya nuts at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The old couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Pan Guijuan and her 70-year-old husband Ding Guofan pick the Chinese torreya nuts on the mountain at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The old couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)

 

Ding Guofan, a 70-year-old farmer, and his wife Pan Guijuan look at the Chinese torreya trees at Xishantou Village of Jingling Township in Xinchang County, East China's Zhejiang Province, Sept. 23, 2013. The couple began to plant Chinese torreya trees 9 years ago, starting their business on torreya nuts, a kind of rare and nutritious food. About 25 kilograms torreya nuts would be harvested this year, and the retail price was expected to reach 600 yuan (98 U.S. dollars) per kilogram. (Xinhua/Han Chuanhao)