The number Gu Nianzhi was calling was He Zhichu's private number. Less than five people in the entire world knew the number.
He Zhichu had just finished his breakfast and was now at his desk, sorting through his work-related emails.
He heard the ringtone for his private phone. When he saw who was calling, he immediately took the call.
"Good morning, Professor He." Gu Nianzhi's sweet, gentle voice sounded from the other end of the line. He Zhichu let go of his mouse, and leaned backwards into his chair. He said coolly: "Hello, Nianzhi."
Gu Nianzhi breathed a sigh of relief. She knew He Zhichu was mad at her, but he had accepted her call. That was a good sign, wasn't it?
"Professor He, do you remember what I asked you the last time we met? That thing about your signature? When are you free?" Gu Nianzhi asked respectfully, a smile in her voice.