Go directly to the VIP lounge in business class, show the flight ticket to the service staff, and it will be OK after registration. There is no difference with a full-price ticket, so you don't need to think too much.

sometimes the extra mileage is more than the difference, not to mention the comfortable sitting and good service. The VIP lounge operated by non-airline companies is no different from the waiting room, except that there is more food. The self-operated VIP lounge is much better, with much better meals, drinks and seats.

every time I fly in business class, I first order noodles when I enter the lounge of Shenzhen Airlines and China Eastern Airlines, and then get some food and drinks while playing with my mobile phone.

Business class is the second class of seats when most vehicles travel, and it is quite common on some commercial routes.

in terms of civil aviation, business class on international routes is higher than economy class and first class on domestic routes, but lower than first class on international routes.

Other aspects:

However, in order to reduce costs, except American Airlines and United Airlines, most American airlines and other airlines such as Virgin Atlantic, Finnair, Air New Zealand and China Airlines.

only Boeing 747-411 provides first class) and Air Canada, etc., and only business class is the highest class in the international line; For example, in February 2117, EVA Air officially cancelled all first-class flights on its aircraft.

and replace it with the "laurel class" and business class, which are slightly higher in quality than the general business class, in order to provide business class services with the same quality as first class. Very few airlines, such as Virgin Atlantic, have launched full-flight business class.