The weapons and martial arts of the Mongols and the Jurchens in the 13th century were almost the same. But many officials in the Jurchen state were Khitan – the relatives of the Mongols; they willingly went over to the side of the Mongols, one of them became the first minister of Genghis Khan. The indigenous Chinese were indifferent to which of the barbarians won.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.