Yan Qian (337-370) was a political power established by Murong Mu, a noble leader of Xianbei during the Sixteen Kingdoms Period, with the title "Yan". In its heyday, its ruling areas included Jizhou, Yanzhou, Qingzhou, Bingzhou, Yuzhou, Xuzhou and Youzhou. It lasted for three generations and three masters, and the first class was thirty-four years. It was named "Yan" because its location was the former site of Yan State during the Warring States Period. The Spring and Autumn Sixteen Kingdoms began to use the name "Yan Qian", which was used by historians to distinguish Murong Yan in the same period. It is also called "Murong Yan", and its royal surname is Murong, but other Murong Yan don't use this name. "Murong Yan" has become the proper name of Yan Qian.
Houyan (384-407) was a country founded by Murong, a Xianbei man, during the Sixteen Kingdoms Period. It was founded by Mu Rongchui, the fifth son of Murong Mu, the former Yan emperor. His ancestral home was Zhongshan (now Dingzhou, Hebei Province), and later he moved to Longcheng (now Chaoyang, Liaoning Province), and it flourished in most areas of Hebei, Shandong, Liaoning, Shanxi and Henan. After the Battle of Shenbei River in 395, Houyan split in two and began to decline. In June 396, the Northern Wei Dynasty captured Zhongshan (now Dingzhou, Hebei Province), the capital of Houyan. During the Longcheng period, the post-Yan was in chaos, and it was replaced by the Northern Yan in 407. Twenty-four years after seven masters of Yan Li.
Southern Yan, one of the 16 countries in the Sixteen Kingdoms Period, was built by Murong De. In 398, Optics Valley established its capital. The part that ruled present-day Shandong and Henan was called Southern Yan in history. In 409, Emperor Wu of the Eastern Jin Dynasty led an army to the Northern Expedition. In February of April10, Optics Valley fell and Southern Yan died. Calendar two main twelve years.
Beiyan (407-436) was a political power established by Feng Ba, a Han nationality in Xianbei during the Sixteen Kingdoms Period. In 407, Feng Ba destroyed Hou Yan and made Gao Yun (Murong Yun) the king of heaven, so that Dulong City (now Chaoyang City, Liaoning Province) still used the name of Yan State, which was called Beiyan in history. In 409, Gao Yun was killed by his subordinate Liu Gong and peach kernel. After Feng Baping's coup, Tianwang was located in Changli (now Yixian County, Liaoning Province). It is reported that there are Liaoning Province in the southwest and Hebei Province in the northeast. It was destroyed by the Northern Wei Dynasty in 436.