What does Zhou Sheng mean by casting gold as before?

Chow Sang Sang is a TV play as usual. Based on Mo Bao Bao Fei's novel "A Beauty's Bone for a Life", it mainly tells the story between Shengchen Zhou, a promising young king of Chen Nan, and Cui Shi, the only daughter of Cui Shi, a noble family.

Shengchen Zhou is determined to serve the country all his life, and his rigorous style and modesty are praised by people all over the world. As soon as Cui Shishi was born, she was hailed as the future crown princess. Because she and Wang Fu are family friends, they were sent to Wang Fu by their elders to study.

Cui Shishi's kind, lovely, lively and intelligent personality has won everyone's love in Wang Fu, and his learning ability has improved rapidly, which is Wang Fu's pistachio.