 In 1442, a succession dispute between Cungšan and his half-brother Fanca led to a division in the Jianzhou Left Guard.Cungšan inherited his father's position as head of the Jianzhou Left Guard while his brother Fanca was made head of a new separate Jianzhou Right Guard by the Ming Dynasty.After the death of his half-brother Fanca, Cungšan brought the Right Guard under his control.