Recently, some consumers reported that they had originally booked a Pearl Economy Class cabin, but were forced to downgrade the night before their trip, and the seats of three people traveling with them were even split up into different "middle seats."The consumer said: Due to the temporary change of aircraft models by the airline, his demand for his parents and daughter to fly in the Pearl Economy Class could not be met.

She said that it was obviously the airline's behavior that caused inconvenience to consumers, but the airline only gave two options: downgrade or refund.
And if they cancel their tickets and buy new ones, the rising fares and disrupted itineraries before travel will cost them more. It seems like "choose one", but in fact, if they want to reduce their losses, consumers can only accept the option of downgrading.
After the reporter consulted the customer service, they said that the flight they took was changed from A359 to A350, and the changed aircraft still had Pearl economy class. If there are insufficient seats in Pearl Economy Class, some passengers may be downgraded due to system adjustments.