Why did smaller carriers remain on the China Station?

Why did the larger Furious, Glorious, and Courageous-class carriers not remain on the China Station?

They were expensive and needed with the main fleets, while smaller carriers could provide enough air power for routine Far Eastern tasks.

Furious, Glorious, and Courageous did not become the station's routine carriers. They were expensive to deploy and needed for fleet work closer to Europe and the Mediterranean. A smaller carrier could provide the air power required for presence and local counter-piracy without consuming the same resources. Hermes and Argus therefore fitted the station's recurring tasks better than a large fleet carrier. The answer illustrates how deployment choices followed mission scale and logistics rather than simply assigning the most powerful available ship.