After the death of Xianjia, Xianjia's sons Xiancheng and Sun Xianyuan were sheltered by Nanjia's family and left by boat. Later, the south defected to North Korea, and began to publicly shelter the North Mission and its party. They moved to Langgang. At this time, Anton of Langgang (Hanggang) greeted Xiancheng and his son. Anton Zhen Ji married the daughter of Xianjia, which may be the reason why Anton welcomed Xiancheng and his son. In addition, Langgang is located in the center of Tianjin and Guangzhou, and it is a transportation hub connected with the offshore. This is the embodiment of the effectiveness of Anton's decision to place the North Mission here.
There is another explanation for the reason why Beituan joined Langgang. The daughter of the doctor of the Ministry of War in Langgang was an official in the fairy family, served the fairy family, and gave birth to Xiancheng, so Xiancheng entered Langgang.
Langgang is called Langgang Imperial House in the Northern Clan. Xianjia's younger brother, Xianxin's son, later joined Lang Gang. The Langgang family of this system is called Heyuan imperial academy. There is also a fairy family's practice of learning to be immortal, based on Chu Yutian Tongcheng, known as Beitian Tiantong Pill. Later, he also entered Langgang. According to the legend of later generations, it is based on Tongshan, Tian Yun.
At first, some people studied the town hall of Beituanjia in Dongshangen area. Langya City was built in the first generation of Xian Yi, so it is considered as the stronghold of the northern tunpu in Langya City. This time is considered to be about the second half of the fifteenth century.
During the Warring States Period, Tianjin was divided up by the North Regiment Family, the Dapu Family and the Daguang Temple Family. There are three generations in Langgang Imperial House: eternity, unity and auspiciousness. Kyoto has sent envoys and officials. However, in Lu Yong for five years (1562), Kitahara of Kawahara Imperial Institute killed Kitahara of Langgang Imperial Institute, which led to the rebellion of Kawahara Imperial Institute. After that, the North League family of Langang imperial academy declined rapidly.
One theory about the demise of Langgang Imperial House is that in July of the sixth year of Tianzheng (1578), Dapu attacked Langgang for the letter, and Beiwanxian Village was captured and later cut off. Another way of saying it is that in February of the eighteenth year, the North Tuanjia was captured by Dapu and lost. However, it is an indisputable fact that the famous North Group died at the hands of Dapu.
After that, Langgang Imperial House finally became the supplementary master plan of the main village. After the fall of Langgang City, it became a southern vassal in the name of Langgang. Xianze's younger brother, Kyung-ho, succeeded Langgang as a family elder in Anton (Akita). Another brother, Xianzuo, married the daughter of Xiancun and inherited his position as the head of the Beitun clan in Langgang. Later, he moved to the museum and retired. The edo period was called Yamazaki's family, which was passed down from generation to generation by children and grandchildren. In Meiji 15, the original surname Beituan was restored, which has continued to this day.