Shen Jun, chief scientist at Beijing Unistrong Science & Technology Cooperation, said precision agriculture applies technologies like global satellite navigation systems, remote sensing and automatic control systems over the whole farming process.
She started a cooperative to produce the Miao ethnic dress and embroidery in 2015, and it has grown from an initial eight members to more than 20.
She said that in the West, despite standards of living falling for many people since the global financial crisis of 2007-08, governments are not seen as important players.
She said that she believed decisions should be judged "community by community".
She called on more enterprises to contribute to the effort, "as no one can solve security problems alone".
She said that at the beginning the boy she exchanges letter with was reserved, and only talked about his academic performance and relations with classmates.
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She works at Hebei Library in North China's Hebei province and is in charge of the library's antiquarian books.
She was awarded a scholarship to study for a master's degree in spider diversity at the University of Chinese Academy of Sciences in Beijing and currently works as a spider taxonomist at the National Museums of Kenya.
She said she can make as much as 2,000 yuan a month from the job, adding that having a stable income helped her escape poverty last year and made it easier to take care of her family.
She pointed out that while she could only earn around 1,000 yuan per month in Vietnam for working more than 12 hours per day, she now receives 3,000 yuan monthly, plus boarding and lodging, for an eight-hour day.