Handing him the key, it simply means Jin Ling has a safe place to stay with him. The situation is making him tense, but this is the best that Sizhui can do for him. He can see the fear in his eyes.

"Jin Ling. Please be careful. If you need help, you can count on me. I'm on your side. Even if you're from the other sect, you're my friend." Smiling brightly. "I'm a Lan, so my family protects."