The younger one attended Anhui University of Chinese Medicine and earned bachelor's and master's degrees there

After about a year in Hefei, Park took a job in the United States and tried to persuade Cho to give up Hefei

Children cool off themselves at a wading pool in Toronto, Canada, on Sept 24, 2017

Similarly, the annual per capita income in impoverished rural areas has grown to 10

"At the peak, I had 21 relatives living here, and there are still 12 of them now," Cho said