C91 Two Older Brothers like Old Nannies

In fact, they all knew what Yu Kexin had gone through and who had done it, but there was nothing they could do about it, because they were just teenagers at the time. There was nothing they could do to stop their father and father from experimenting on Yu Kexin.

At that time, they were very strange. Even if it was an experiment, they should have been the ones doing the experiment