The heavy safety door connecting the inside and outside of the cage is made by Fink industry. Elizabeth tried to pry the lock, but failed. Her process of prying the lock has been recorded. Booker knows that she knows the door very well. Elizabeth and it are old rivals.

On the way by boat, the woman - Booker now knows her name is lutes, the chief scientist in Colombia - gave Booker a key in the box, which is the key to the door.

Many things are intricately placed in front of Booker. He can't see clearly and sort them out for a while, but those are not important. The important thing is Elizabeth. The important thing is to take the little girl out. If she is willing to follow Booker back to New York, they will go to New York. If she wants to go to Paris, they will go to Paris. Many parts of the world are worth seeing. There are many things worth trying, many people worth loving, and many ideals worth fighting for.

People have life because of freedom. Elizabeth used to be dead, but she was also a dead doll. Now she is going to live. The key in Booker's hand is exquisite. One side of the key handle is the pattern of a bird and the other side is the pattern of a cage. This is the key for the bird to open the cage.

Elizabeth took the key in surprise, turned and skillfully opened the heavy insurance door. After living for twenty years, today is Elizabeth's first time out of the cage. Booker smiled and said, "go down! Go to the elevator! " With her skirt in her hands, she ran down the stairs and across the corridor.

At this time, the guests outside the statue tower were very impatient. He gave out more and more harsh and heavy cries. Booker had never heard such a sound in his life, and there were few close to such a heavy sound. Perhaps it was the iron balls of mortar tearing the sky, or he witnessed the huge tidal sound of mosken vortex at night in Norway.

"What is that!" He couldn't help asking questions.

"It's a nightingale!"

"I know it's a nightingale! But what is a nightingale? " Elizabeth ran in front of him, and the whole statue began to shake violently. The monster outside wanted to tear and tear the tall brass tower. Booker saw with his own eyes that the sharp three toed steel claw tore the heavy copper plate. Through the twisted and ferocious gap of the metal, he could see a large and fast black bird shadow flying in the sunny sky outside - that is the nightingale.

He stepped up his steps and caught Elizabeth's wrist. She ran too fast. Booker had no time to speak. He took Elizabeth all the way down, rushed to the elevator entrance of the observation room and anxiously called the elevator.

Elizabeth looked around the observation room. She pulled open the lever and saw that behind the glass was her residence. The fact that she had been monitored for a long time was finally clearly put in front of her.

The statue tower was in a huge earthquake, and the vibration did not stop for a moment. This is the city of the sky, Colombia, but Booker felt that he was in an earthquake!

"These... They've been watching me for so many years? Why did they leave me here... What am I? "

"Don't worry, I'm going to take you away. Think about life outside. It's freedom. I'll take you to see everything."

"What is everything?"

"Everything is..."

Before the voice fell, the elevator door was torn by the ferocious Nightingale, and they screamed.

The Nightingale's huge breathing helmet in the shape of bird's head can't reach into the room, but its side head, like a real bird, looks at Booker and Booker with a strong and dazzling yellow glass eyepiece. The flashing light, like a look at and warning, stares maliciously, and constantly hits the elevator mouth with its head to break the wall, just like a woodpecker preying on worms.

Booker was almost out of breath.

The huge and ferocious nightingale is basically a monster like an upright African elephant. The traces of biological transformation make his body extremely unnatural and blasphemous, which is like a terrorist creature imagined by factory workers in a coma in the steam when they have nightmares.

So Booker protected Elizabeth behind him and fired. He quickly tilted the ammunition in the Mauser gun and released the crow siege with the power crow storm he bought. These black unlucky birds covered the Nightingale's sight and blocked the strong and ominous yellow light, so that he could breathe more or less.

The bullet hit the Nightingale's body surface, but it was undamaged. It just made an ugly and huge cry. The huge sound drowned the narrow observation room. Booker lost his hearing for a moment. In the strong beep of the cochlea, the Nightingale got closer and closer. In this dark, narrow, dark and critical space, the elevator finally arrived and the prompt sound tinkled, Then the falling elevator smashed the Nightingale down. The crisis was temporarily lifted.

Booker quickly put away his pistol, grabbed Elizabeth's hand again and took her to escape outside the statue.

In any case, they must escape, otherwise they will be trapped in the tower and will only be torn apart by the Nightingale and the whole statue.

So they really came outside and stood on the slippery and cold brass trail. Walking up is the head of the statue, but walking down doesn't know where it leads.

"Where are you going?" Elizabeth also clung to Booker's palm, and her face had completely faded.

"Up." Booker took out the magnetic sky hook at his waist. Now he can only hope on it. Although Booker has never used this guy, according to Mr. Benjamin, this thing is very reliable and can adsorb you to the empty track from a distance. Damn Benjamin, I hope you're fucking telling the truth. Behind the statue came another bird's cry through clouds and rocks. Then the brass colossus gently shook its shoulders and shook Booker out. Their feet were off the ground and they fell towards the clouds. Booker cried, and Elizabeth cried, and they held each other's hands in mid air“ Hold on! " Booker suddenly burst into laughter in such a violent fear of death. They whirled down and saw the fast approaching empty track. Booker pressed the trigger of the magnetic sky hook, and the hook claws rotated. The strong magnetic force attracted it to the empty track. Boom! Booker's in line! He felt that his arm was almost torn, but fortunately, the downward trajectory of the empty track broke down the impulse. He was moving rapidly along the magnetic empty track. At a height of 20000 feet over North America, Booker DeWitt took Elizabeth over the clouds, the collapsed statue of the brass lamb, the tail propeller of the empty boat, the atmosphere and wind, the city and the soul. Booker laughed merrily, and Elizabeth spread her limbs like a leaping cage bird“ Freedom! Freedom! " The Nightingale passed by them, tearing the empty track and suspension bridge in front of them in the dry and loud cry. Booker shouted again like a woman. He couldn't catch Elizabeth. They flew out and rolled into the gray blue sea with a huge amount of building debris. The water on the sea was sparkling and approaching rapidly. When Booker hit the sea, he had the illusion of being shot. In severe pain, he fell vaguely to the bottom of the sea and looked up at the sea. The Nightingale also rushed into the water. The rapidly rising water pressure squeezed his mirror, and the building fragments hit his back. The Nightingale whispered in the sea, Finally, he failed to execute Booker. He broke away from the sea and fled to heaven. This was the last sight Booker saw before he woke up. Then he fell into a deep dream in the deep sea.