"Worried" was not the word Yu Ming expected to come out of Wu Jingguo's lips. You could say their relationship is far from normal. Even if they could be physically close at times, they weren't friends or anything, and that was why the word "worried" that escaped Wu Jingguo's lips managed to startle Yu Ming.
In the end, Yu Ming didn't even reply to Wu Jingguo's words, and the two of them continued to walk away from Youshan Hall as they were enveloped in silence again. Wu Jingguo ordered a servant in the palace to prepare his mounts, and after the two horses were ready near the palace gates, the two immediately jumped onto the backs of the animals before departing from the Xinyang Imperial Palace.
They didn't know that someone had been observing them from afar, and after witnessing how the two men departed from Xinyang together, that person also left his hiding place before walking somewhere.