What is the next sentence of "icing on the cake"?

The next sentence of "icing on the cake" is "icing on the cake". This sentence is a two-part allegorical saying, which should have been: icing on the cake-good is good. Its significance lies in:

1, icing on the cake, means adding flowers to the beautiful brocade fabric.

2. The metaphor is slightly modified to make it better, and the extended metaphor is further improved on the basis of the original results.

The original sentence comes from? Huang Songting-zhang's Ode to the Temple: "I want to pay tribute to Fu Weng again. The picture is the icing on the cake." In addition, Qing's Huang Ranfeng: "The Third Lady congratulates her on becoming the first lady, entering a brand-new house and releasing her usual ill feelings. It's really icing on the cake. "