That was because his monotonous voice was filled with love for her.
"You don't like me calling you that?" Lu Xingzhi asked after receiving no reply. "If you don't like it, I won't do it again."
A brief pause later, he explained, "I heard your parents call you that, it sounded really lovely."
"It is."
Engulfed in darkness, Lu Xingzhi could not see Jiang Yao's smiling eyes. Her voice was calm, but she answered instantaneously. That was enough information for Lu Xingzhi. She liked that he called her by her nickname.
Knowing that she could not see it, he broke into a wide grin.
"I know I put you through a lot this time, I am sorry." Lu Xingzhi had been wanting to apologize for some time. Taking advantage of the darkness, he finally said it.
Not waiting for Jiang Yao's reply, he added, "Thank you by the way, for saving Colonel Lin."