evidence: With the Yalu River thawing, fishermen in the Chinese border town of Kuandian, near the Democratic People's Republic of Korea, are welcoming a new season and one of their busiest times of the year. [...] An aerial shot of fisheries on the Yalu River on the China-DPRK border. /CGTN [...] "The Yalu River's water quality has reached level two of national drinking water standard. We have also picked the strongest fish for breeding over 16 years and improved their survival rate, so we don't need to use any antibiotics," said Luo. "Instead, we mix traditional Chinese medicine herbs, such as ban-lan-gen, or Radix isatidis, traditional herbal medicine in China, and ginseng roots into the food to beef up the fish."