Kallas också : 顏正國, Yen Cheng Kuo, Cheng Kuo Yen, Cheng-kuo Yen, Aan Jing-kwok, Ngai Chai-kwok, Yan Ching-guo, Yan Jang-kuo, Yen Chin-kwok, Yan Tseng-kuo, 颜正国, Yan Zhengguo, Zhengguo Yan, Yen Chêng-kuo, Chêng-kuo Yen, Ching-kuo Yan, Yan Ching-kuo, Yen Chen-kuo, Chen-kuo Yen
