Chen and his development team successfully developed RCJ-1, China's first fault-tolerant computer and "a dual-mode fault-tolerant system with self-test and self-correction". and its reliability increased by more than four times. Chen Guangxi also co-published the first fault-tolerant computing monograph "Diagnosis and Fault Tolerance of Digital Systems" in cooperation with Professor Chen Tingyu of Chongqing University. In 1981, it was published by the National Defense Industry Press and became a national textbook.