For example, the mileage from Guangzhou to Shanghai is 12 10km, so you can accumulate points in Y (economy class) 12 10.

When you say spend 14 yuan exchange 1 China Eastern Airlines mileage, it's actually 1 points.

Standard mileage means that when the distance is less than 500km, it is also treated as 500km.

If you spend 14 yuan, you can accumulate 500 points, then the airline will not lose money.

After careful calculation, 14 yuan is an integer. If you want to bet a ticket of 600~ 1200km, you need 12000 points, which means you have to spend12000 *14 =168000 yuan.

As you said, it doesn't mean anything.

These are all publicity stunts. Including some supermarket membership cards, I calculated carefully that even if I want to get a reward of 50 yuan, I still need to spend in that supermarket for several years in a row.