"No, not yet!"
Before the Fourth Prince's vision completely recovered, the Empress didn't want anyone to know. She feared that the greater the hope, the greater the disappointment.
Besides, the Second Prince was her backup. Even if the Fourth Prince was rendered useless, the Second Prince could take his place, making her position in the Harem as steady as a rock, unshakeable. So, the fact that the Fourth Prince's eyes were getting better couldn't be told to the Second Prince.
The Empress was afraid that if the Fourth Prince's eyes didn't recover, the Second Prince would grow estranged from her. Who could she rely on then? One must always leave a way out for oneself, right? So without the Fourth Prince's instructions, she hid the fact about his recovery from the Second Prince.
The Fourth Prince nodded and said, "Mother, don't tell him. Once my eyes heal, I'll make him suffer."
