With all kinds of shock, João IV finally arrived at his destination at seven o'clock in the evening: the Tianjin State Guesthouse.

It is a very palatial state-run hotel, consisting of four beautiful four-storey buildings, which are specially designed to welcome dignitaries. The exterior wall of the outermost welcome building of the hotel is made of a large amount of glass materials, which looks magnificent and full of futuristic feeling, as if it does not belong to this era.

The dazzling glass curtain wall stunned João IV and his entourage, who jumped out of the carriage, and stood at the entrance of the building for a long time.

It wasn't until the waiter in the hotel came out to help them carry their luggage that the Portuguese suddenly took a step forward and followed the waiter into the state guesthouse.

After allocating rooms to the king and ministers of Portugal, Cai Huaishui went back.

João IV stood in his room and the first thing he noticed was the two doors in the room. He pushed the two doors open, and found two small rooms with beautiful tiles.

Those beautiful tiles stunned João IV.

You must know that in Europe, Chinese porcelain is an expensive luxury. If a relatively wealthy citizen can put a vase in his home, he is regarded as a wealthy person with good taste. And if you have a set of porcelain tableware from the Orient at home, you are a well-deserved rich man.

In these two small rooms, however, the entire lower part of the room, from the floor to the height of a person's neck, is covered with smooth and beautiful tiles. Those tiles are yellow-brown, I don't know what process was used, not a solid color. The color is yellow-brown with some brownish-black mottles, which is particularly beautiful to look at, like a set of works of art.

Porcelain was a suffocating luxury for João IV.

He reached out and stroked the ornately colored tiles, feeling only a smooth coolness.

On top of this beautiful tile, João IV saw a large mirror one meter long and wide.

The mirror made João IV sigh again. You must know that in Europe, mirrors are still treasures, and if a noble girl can have a set of mirrors as a dowry when she gets married, she can make her husband who is also a nobleman admire her courtesy.

And in this room, there is such a large mirror directly arranged.

João IV became increasingly puzzled as to why these new things, which were considered treasures and luxuries in Europe, were so widespread in Tianjin. How did Li Zhi turn these handicrafts that required craftsmen to make them so slowly and hand-in-hand into such cheap ordinary goods?

Could this be the power of the "factory" that Cai Huaishui said in the carriage?

With such a high efficiency in manufacturing civilian goods, what will be the speed of production of military supplies?

Joao IV couldn't help but be a little afraid of Li Zhi's strength.

There is a porcelain basin under the mirror, there is a drain in the middle of the basin, and there is a pipe above the basin with a switch on the pipe.

As soon as João IV turned on the switch, water immediately gushed out of the pipe, startling the King of Portugal.

It was so strange that João IV took two steps back in fright, making sure that the water that was spewing out of the hose would not hurt him.

For a long time, the water just kept flowing into the porcelain pool, and no other hidden weapons shot out.

João IV reassured himself and carefully examined the water that was spurting out of the pipe.

By this time it was already dark, there were no windows in the bathroom, and João IV could not see clearly.

Suddenly, I heard a snap, and the whole room lit up.

João IV was startled again, and subconsciously jumped back against the wall of the bathroom, and jerked his head up to look for a light source.

He soon spotted the electric light overhead.

The light bulb in this state guesthouse is quite elaborate, not an incandescent light bulb exposed, but a frosted glass cover on the outside of the light bulb. The whole lamp hangs from the ceiling, and it looks like a giant pearl of the night.

João IV stared at the "pearl of the night", and his eyes were about to pop out - there is such a big shining gem in the world?

It's priceless, right?

How could Li Zhi load such a treasure into the guest's room, and Li Zhi was not afraid that he would secretly steal it and take it away?

João IV was struggling there when a Portuguese-speaking waiter walked up to the bathroom door and said with a smile: "Your Royal Highness, press this switch to turn on the bathroom lights." There is one light each in the bathroom and toilet, and two lights in the room. “

João IV was stunned for a long time and asked, "What is an electric light?" “

The waiter smiled: "The electric light is the electric lamp, and it is the light that shines on it!" “

João IV asked: "Is this a lamp?" Isn't this the pearl of the night? “

The waiter laughed, pressed the switch to turn off the light, and pressed the switch to turn on the light, and said with a smile: "Your Highness, this is not the pearl of the night, this is the electric light, it is a new lamp invented by the prince!" This lamp has no fire, no oil, uses electric drive, and turns on when you press the light. “

João IV watched the electric light next to the waiter turn on, and was silent for a long time, before finally deciding to believe the waiter, believing that this jewel-like round glow was a lamp.

He thought for a moment and asked, "What is electricity?" “

The waiter touched his head and said, "It's really unclear for a while." “

He stepped out of the bathroom and turned on the two lights in the bedroom. Then he walked over to the heavy curtain next to the outer wall of the room and pulled the cover open.

João IV walked out of the bathroom in surprise to see what the waiter was doing.

A spacious, bright window appeared in front of João IV.

The waiter pointed out the window and said with a smile: "Your Royal Highness, look at the night scene outside the window." “

João IV was stunned, what is there to see about the night scene of the dark road?

In Lisbon, the city is dark at night. If you look into the city of Lisbon from the castle of João IV, you can see the shadow of the building. Even on the brightest moonlit night, you can only see the shadowy façade of the building, which is not beautiful.

João IV never saw anything to see in the city's "night scene".

He walked up to the waiter with suspicion and looked out the window.

The lights of thousands of homes outside the window suddenly stunned Joao IV.

Looking down from the window on the fourth floor, the entire Tianjin Acropolis was shining. There are street lamps on the roofs of the villas next to the street, which illuminate the restaurants, inns, pedestrians, cars and horses on the road. João IV saw a lively night market street not far from him, where many people drank and ate meat, shouting.

It's not just the streets that have street lights, but every house is lit up with golden lights. The light leaked through the glass windows of the building, making the villas look like glowing boxes. Countless lights complement each other, illuminating the night of Tianjin, making the whole city look exquisite and transparent.

João IV's mouth was wide open and he was speechless for a long time.

"Lord... My Lord... It's so beautiful. “