 (KJ is from the first characters of the Pinyin spelling of 空警, (Kōng Jǐng), short for 空中预警 (Kōng Zhōng Yù Jǐng), which means Airborne Early Warning).According to PRC government claims, a single KJ-1 would be equivalent to more than 40 ground radar stations, but development was stopped due to the Cultural Revolution.In the era of the Chinese economic reform, the project was once again put on hold because economic development was given top priority.