With the China airlines choose seats feature, passengers can select seats in advance. Seats can be selected via Manage Booking or at the time of booking. Premium seats may cost more for economy travelers. Passengers in business and premium economy typically get free seat selection. Members of Dynasty Flyer may be eligible for special seating advantages. Exit row and bulkhead seats are... https://airlinescityoffice.com/blog/how-to-book-seats-on-china-airlines-using-flyblue-points/