This servant's call was not to anyone else, but to Gu Zhenhua.
She hid in a secluded corner, recounting everything she had just overheard, word for word, to Gu Zhenhua.
"Are you sure you didn't hear wrong?!" Gu Zhenhua asked incredulously.
"Master, I'm absolutely certain. I heard it very clearly. The young master concealed it from you because he was afraid you would take the young master away."
There was a prolonged silence on the other end of the line.
Gu Zhenhua didn't hang up, so the servant didn't dare to either.
After a long while, a low, seemingly emotional voice came through the phone, "Go get a few strands of that child's hair immediately, find a way to get them out."
Gu Zhenhua wanted to conduct a paternity test himself to confirm whether Mo Qiansu's son was indeed a Gu family member!
...
Meanwhile, the two people still talking in the room had no idea that Xiaoyu's story had already reached Gu Zhenhua's ears...