It's winter fishing season in Chagan Lake, in northeast China's Jilin Province, the busiest time of the year for fishermen there. The region's tradition of ice fishing dates back to about 1,000 years ago, around China's Liao and Jin dynasties. Locals have carried out the tradition till today. CGTN's Sun Tianyuan joins the local fishermen, dubbed the last fishing tribe in northeastern China, to find out how to fish like a real Chagan laker without any modern technology.