During the Ming Dynasty, the Jurchen tribe that rose to power in Nurhachi posed a great threat to the Ming Dynasty. However, problems such as internal friction, the strategy of divide and rule, and repeated mistakes in the use of firearms and command made the Ming Dynasty helpless in the face of Nurhachi's rise. We'll dig deeper into this history and reveal why the Ming Dynasty was unable to respond effectively to this rising wave.
Nurhachi. The clouds of internal friction:
The actions of the eunuch Gao Huai in Liaodong led to a number of mutinies, and this internal strife directly interfered with the formulation and implementation of foreign policy in the Ming Dynasty. The struggle for power and intrigue plunged the Ming Dynasty, which had been united with the outside world, into the quagmire of internal strife.
Film and television drama characters.
Strategic Plan Oolong:
The policy of clear division and rule has also laid a hidden stake within the Jurchen tribe. For example, Shulhaqi was supported by the Ming Dynasty to become the leader of the right guard of Jianzhou, and tried to gather forces within the Jurchens, but the bureaucratic struggle within the Ming Dynasty continued to interfere, and Shulhaqi's power was finally defeated by internal and external attacks, making the Ming Dynasty's divide-and-rule strategy completely bankrupt.
Ming Imperial Palace. The use of weapons and command are not satisfactory:
It is worth noting that the Ming Dynasty gathered about 100,000 troops to attack Nurhachi in the fourth year of the Mandate of Heaven, but in the Battle of Sarhu, the Ming army suffered a crushing defeat due to confusion in command and internal strife, which contributed to Nurhachi's prestige. This shows that the military machinery of the Ming Dynasty encountered serious problems in dealing with it, including the correct use of firearms and the lack of command skills.
Ming Dynasty firearms. 
Open artillery. 
The rise of Jurchen power is irreversible
After many twists and turns, Nurhachi officially declared war on the Ming Dynasty in the third year of the Mandate of Heaven. The Ming Dynasty attempted to defeat Nurhachi by gathering a large army, but the result of Lian's defeat in the war led to the rise of Jurchen power, not only defeating Yehe, but also annexing the tribe that had once been supported by the Ming Dynasty.
Jurchen. This historical period shows that the Ming Dynasty repeatedly failed to deal with the rise of Nurhachi, whether it was internal chaos, the failure of the divide and rule strategy, or the use of firearms and the level of command, which made the Ming Dynasty unable to effectively counter the rise of the Jurchen forces.
Jurchen army.
Summary:
The history of Nurhachi's rise teaches us that in the face of external threats, we need not only clear policies, but also internal stability and efficient command. The Ming Dynasty fell into a whirlpool of internal struggles and strife in the implementation of its foreign policy, which eventually led to the loss of control over the Jurchen forces. This historical lesson reminds us that the strength of a state comes not only from the formulation of foreign policy, but also from the need to maintain stability and unity in internal construction.