High school student Fin Phillips from the US marveled at Chinese agriculture. Phillips has been studying Chinese and has long dreamed of visiting the country.

His teacher, Wang Jingtao, added, "The circular agriculture here gives US teenagers a vivid classroom to understand China's sustainability."

"Dajia Eco-agricultural Industrial Park has so far hosted over 7,000 foreign young people, including American teenagers from 32 states and universities like Harvard and Yale," said Xu Zhiwei, mayor of Panzhuang town.