老李把烫到手的手指在袖口上蹭了蹭，火星子烫出的那点红痕像是被蚊子叮了一下，火辣辣地疼。他皱着眉盯着那铜锁，油渍还在渗，说明这玩意儿不是铁打的，里面得有层特殊的夹心。他想起昨晚系统提示，说这铜锁里夹着一块“玄铁碎片”，只是这碎片怎么被油涂上了？

“啧，搞什么鬼。”老李心里骂咧咧的。这年头，连偷点东西都得有这种高科技玩意儿防着。他蹲下来，借着旁边一盏昏暗的灯，仔细研究起来。

铜锁不大，巴掌大小，呈暗红色，摸上去滑腻腻的。老李用随身携带的匕首轻轻敲了敲，声音沉闷，不像纯铜。他心里有了数，这铜锁肯定不是纯铜，里面夹着什么，表面上肯定是抹了油，来迷惑人的。

老李深吸一口气，拿出系统。叮！系统提示：“检测到宿主需要开启一个物品，是否使用‘开锁’技能？”

开锁技能？老李眼睛一亮。他早就想试试这个技能了，只是没机会。现在好了，机会来了。他毫不犹豫地点了“是”。

“咔嚓”一声轻响，铜锁被打开了。老李伸手进去一掏，掏出一张皱巴巴的纸条。他展开一看，上面写着：“玄铁碎片，内有藏宝图一张，速取。”

老李笑了，这老头子还挺会玩。他立刻收好纸条， Intent to put the copper lock back, but suddenly thought of something, he stopped. He reached into the lock and found a small hole. He looked around and found a small bottle cap hiding in a crack in the wall. He picked it up and put it in the hole. Then he closed the lock and stood up.

All of a sudden, a voice came from the bottle cap: "Young master, are you back?"

老李 was shocked, "Who are you?"

The voice replied, "I am the spirit of the bottle cap. I was told by the old man to wait for you. He said that you would come back and open the lock."