With the skyrocketing value of tigers and pandas, China moved to keep the business going, as Sichuan and Gansu provinces linked up their panda reserves into a 10,476 square mile protected zone. The country also set up a 400-square mile Hunchun Nature Reserve along the Russia-North Korea border, and sent in volunteers to remove thousands of tiger traps that had been strewn like landmines through the forest. After that, sightings of tigers in the area rose from around five to about a hundred per year.
War and Peace with the Beasts: A History of Our Relationships with Animals