The Jade Pavilion -
After Zheng Liang and Yang Ning left, only then did Zheng Xiang heave a sigh of relief. Earlier, he was shocked when his brother agreed to his wife's willful wishes and personally escorted him to the Jade Pavilion, accompanied by Yang Ning, instead of sending a servant to show him around.
He is the Crown Prince after all. He must have had so much work to do, yet he followed his wife's words and showed him around the Jade Pavilion, not caring about the time and their strained relationship.
That was quite a shock to him.