 The Chengdu Aerospace Corporation designed and now produces the Chengdu J-10 light-weight multi-role fighter and Chengdu J-20 fifth-generation jet fighter, that are considered to be two of the most advanced weapons in China's inventory, as well as the CAC/PAC FC-1 Xiaolong (Chinese designation) (CAC/PAC JF-17 Thunder is the Pakistani designation) very light-weight multi-role fighter that is produced in cooperation with Pakistan.Chengdu Aerospace has been cited for its success in developing China's first fifth-generation aircraft and stealth fighter jet.Its development led China to become the second country in the world (first in Asia) to possess fifth-generation and stealth technology.