Lugguage question on flight

If you buy the first-class ticket or business class ticket, you should take at most two pieces of check-in luggage and each should not exceed 32kg. For economic class passengers, the amount limit is also two pieces but the weight of each luggage should be less than 23kg.
For carry-on luggage, the limitation for the first-class and business class is two pieces and 8kg at most for each luggage. For economic class, the limitation is one piece and 5kg at most.