The charging standards up to 32 kg are the same, but the routes are different and the charging standards are also different.
The charging standards for baggage exceeding the limit point-to-point charges in Mainland China: HNA Economy on the day of travel depending on the actual direction of travel, 1.5% of the published one-way fare for the highest class cabin will be charged.
For example: route from China to Oceania
For each item beyond the first item, 800 RMB/170 AUD/170 NZD, for the second item and above , 1,100 RMB/230 for each item AUD/NZD 230.
Business Class: the weight of a single checked baggage must not exceed 32 kg (70 lbs)
Class economy: 23 kg < weight ≤ 28 kg (53 lbs < weight ≤ 62 lbs) 480 RMB/100 AUD/100 NZD; 28 kg < weight ≤ 32 kg (63 lbs < weight ≤ 70 lbs) 800 RMB/170 AUD/170 NZD.
Detailed information:
Articles which are not permitted to be carried as checked baggage:
1. Items requiring special care should not be checked as checked baggage or packed in baggage, but should be carried in the cabin as carry-on baggage if the weight and size of the carry-on baggage are appropriate. exceeded, the regulations relating to baggage occupying a seat will apply.
Such as: important documents and information; negotiable instruments, securities, bills of exchange; digital cameras; laptops and other personal electronic devices; products; Valuable objects ; antiques, calligraphies and paintings; fragile and perishable objects; samples of passports and other identity documents, travel documents and prescription medications that individuals must carry regularly.
2. Mercury barometer or mercury thermometer.
3. Beatlithium battery.
Hainan Airlines official website: payment for excess baggage?