Kong Xiulan's call rang on her phone for a few minutes before Feng Jiao accepted it.
She looked around desperately for a reason for why she was late. She had previously thought of an excuse but it had long left her head. Even if she had remembered it, it wouldn't have been of much use.
The excuse worked based on the fact that Feng Jiao herself was calling to inform Kong Xiulan that she would be late. If Kong Xiulan called first, Feng Jiao automatically lost that advantage and fell into a disadvantage of sorts.
It was like a tactical war of sorts.
The person who made the first move had the means and reason to justify making that move, and the other party had to find out why they made the move. Now Feng Jiao was left as the party that had to explain herself to Kong Xiulan, but she was not ready for it.