1. The monthly salary of employees of Beijing Qiqi Data Company is about 8,500 yuan, which is relatively high, while the monthly salary of employees of Tian Fei Chengxin Company is about 7,000 yuan, which is relatively low.
2. Beijing Qiqi Data Company pays five insurances and one gold, with free accommodation and good treatment, while Tian Fei Chengxin Company pays four insurances, with accommodation at its own expense and poor treatment.