Strange as it is to contemplate, Shen Qingqiu and Jonathan Sims are apparently some kind of social intimates now. That, or Sims is just luring him out behind his house to kill him, but Shen Qingqiu is trying to avoid making any assumptions about the man now he's technically sworn to assist him. If nothing else he seems to have a healthy respect for Shen Qingqiu's strength and combat techniques, so that probably takes murder off the table.

What was it he invited Shen Qingqiu over to come look at? Some kind of cursed artifact?