After Zhang Tianrui left, Zhang Feng came over, looked at An Yinan's tired face and asked, "But something happened? Is there anyone I can help with?"

An Yinan looked at Zhang Feng and shook his head, "The rain is coming and the wind is blowing all over the building. It's okay."

Professor Zhang sighed, and then carefully tore a piece of paper on his notebook, "This is my phone number. If you need help, please contact me at any time."

An Yinan nodded excitedly, but ...