A formal invitation had just been delivered. Someone was summoning Langdon to unlock a mystical portal that would unveil a world of ancient mysteries and hidden knowledge.

• 一份正式邀请刚刚被送抵。某人正在召唤兰登开启一扇神秘之门，那后面隐藏着不为人知的知识，还有一个古老的神秘世界。