An apartment building near the University of Bonn.
Professor Schultz was packing his luggage. Professor Stix was about to invite him out for a drink. He spoke with a look of surprise.
"Are you… planning to go to a conference?"
If he remembered correctly, there should be no academic conferences worth attending in the near future.
"No," Schultz answered the question concisely. He chose a jacket from the closet and stuffed it into the suitcase. He then casually replied, "This is not a conference, but an invitation from Professor Lu. I plan to go to China and discuss some academic matters with him."
"China? Professor Lu?" Stix was slightly taken aback. He hesitated and said, "But last time at the conference, didn't Professor Lu say that he doesn't plan on researching mathematics for a while?"
