The "three talents" who cover the bowl represent heaven, earth and people, and the bowl is a three-piece set.
Three talents cover the bowl, the tea covers the sky above, the saucer is below, and there is a person in the middle of the bowl.
A covered bowl generally refers to a tea bowl with a cover, also known as a three-talent bowl and a three-talent cup, which consists of a tea bowl, a tea cover and a tea boat.