Which is better, Capital Airlines or China Eastern Airlines Beijing?

My brother-in-law is the captain of China Eastern Airlines, and his salary is not as good as that of his college classmates. His college classmates used to be pilots of Hainan Airlines, and later went to Jin Lu Airlines, which is now Capital Airlines. The salary is very good. Now the treatment of HNA has been improved to one of the best in the country. Both Capital Airlines and Tianjin Airlines belong to Hainan Airlines, and both have management systems and standard salaries. If you are a pilot, you can try. For reference only.