it's called dry beng chicken (dry jumping chicken), also called gabeng chicken, popcorn machine. Originated in Gaomi, Weifang, Shandong Province, it was invented by a chef named Hou. The manufacturer is located in Gaomi, called Yuanyu. It's said that they set up the Yu Shan Alliance, which is a catering brand specializing in dry boiled chicken. It can be found on Sohu News.