新长安集团成立后，为什么各品牌都进行了一系列的人事调整？

Group 1 - The establishment of the new Chang'an Group has led to a series of personnel adjustments across its various brands [1] - Chang'an Automobile's chairman, Zhu Huarong, stated that these changes are necessary for independent operation of the brand divisions and contribute to talent development through a competitive mechanism [1]