They saw a cylindrical object on the tray. One end was sharp and looked like a pen, while the other end was connected with a flat metal hoop with thin wire. The inner side of the metal hoop was also inlaid with crystal flakes. Du Ziyuan looked and found that it seemed to be a spirit stone.


    "What''s this?" Xiao Jin stared curiously. "Can you eat it?"


    Tang Junhao, who was just about to introduce, almost bit his tongue: "what, girl, this can''t eat."


    "But there''s a spirit stone on it," said Xiao Jin with a pure face. "Isn''t the spirit stone used to eat?"


    Du Ziyuan poked her in the head: "you think the whole world is as bad as you. The spirit stone is very useful, so you can eat it directly."


    [who are these people?] Tang Junhao adjusted his mood and said, "this is the ''reading and writing pen'' newly developed by the mechanism city. As long as you wear it on your head, you can write the words you imagine in your mind, which is much faster than writing novels."


    "So amazing?" everyone looked at the pen in surprise.


    Du Ziyuan thought, isn''t this the same as thinking? Can the mechanism city even invent such a thing? He couldn''t believe it, so he asked, "is there any restriction on this thing?"


    "Yes," Tang Junhao nodded. "First of all, the reading and writing pen can''t read a person''s thoughts. It''s a fairy means to search the soul without damage. Only a few organs and equipment can''t do it. The user must take the initiative to inject his ideas into the reading and writing pen before it can be urged, and this requires the user''s spirit intensity to reach a certain degree."


    "What''s more specific?" asked Songzi.


    "If you are a martial artist, you should at least resist the sky and the sky. Some people can do it in the later stage of congenital. Those who cultivate immortality ask for a lower level. You can use the fifth tower to nourish your spirit, but it will be a little hard."


    Du Ziyuan asked again, "can you only write this? Can you draw?"


    "I don''t know." Tang Junhao shook his head and looked at the clerk.


    The latter said: "Sir, if it''s just a simple line, it should be able to complete. Too complex things need the user''s very accurate control. It''s very difficult to achieve them."


    Du Ziyuan picked up the pen and looked at it: "what is your refill? Carbon?" at present, the brush should still be the mainstream in the fairy world, but the refill of the reading and writing pen doesn''t use ink.


    "Yes, sir," said the clerk, "the refill of the reading and writing pen is a newly developed material. It is mixed with some carbon and other materials. The writing is very clean and tidy. It won''t be as fuzzy as a brush, and it doesn''t need to dip in ink repeatedly."


    [isn''t this a pencil? The people in mechanism city are really good.] Du Ziyuan asked, "can I try it?"


    "Of course." the clerk explained to him how to use the reading and writing pen carefully. Just put the metal hoop on your head and use your mental power to radiate what you want. The spirit stone flake on the metal hoop will automatically absorb powerful spiritual force, and then convert it into corresponding text patterns through the array.


    After Du Ziyuan put on the headband, he ran the magic method of big dreams and stars, and his mental power spread out automatically. Then everyone saw that the pen stood up and began to write on the paper.


    As like as two peas, the two "standard" characters appeared on paper.


    Du Ziyuan glanced at the clerk and asked, "is the font set in advance?"


    "Yes, as like as two peas," the clerk said. "For convenience, we have written a set of typefaces into the pen and pen, and all the characters are written according to the set of typefaces. Who writes and writes several times is exactly the same."


    [it''s really like computer code words.] Du Ziyuan casually said to the clerk, "maybe you can prepare more sets of fonts, such as cursive script."


    The clerk immediately said, "thank you for your valuable advice. I will report it to the shopkeeper."


    "What if I want to draw? You haven''t entered the drawing template in advance?" Du Ziyuan tried to draw with the reading pen, but found that it was difficult to control. The lines drawn were crooked, which would be more standard, such as straight line and circle.


    The clerk explained: "as you can see, if you want to use the reading and writing pen without our preset template, you must have enough proficiency. It''s like learning a new writing technique. The efficiency will increase after proficiency."


    "I''ll try again." Du Ziyuan found it interesting to read and write, so he took it aside and tried to draw with it.


    Complex lines can''t be drawn. Simple triangles and ellipses are always OK. He felt that if he used it well, he might find a better way to be lazy before he could use mind extension.


    However, this thing is really difficult, just like drawing on the most basic drawing tools with the mouse. The painting style is similar to the original painting style of Superman with one punch.


    [am I a soul painter?] Du Ziyuan suddenly thought.


    While he was studying reading and writing, Tang Junhao continued to introduce two other things. The second is a new type of communication card. In the past, communication cards are one mother and many children, which can only be connected between children and mothers. In other words, every time you add a contact, you must have another communication card, which is really too troublesome.


    Xianwang was created by the emperor of heaven in order to develop the entertainment industry. Therefore, although there is a forum as an exchange platform, there is no private chat tool to facilitate the life of ordinary people. The communication card can be said to be the inevitable product of the information explosion era. This new type of communication card can connect multiple communication cards at the same time, which is no longer divided into children and mothers. While the cost is greatly reduced, it is also more convenient.


    "This thing is still in the testing stage. It will be officially on sale after seven Feng festivals," the clerk said.


    Sister Yanyun is very interested, but Xiao Jin doesn''t care so much. Who she wants to contact, a ten thousand mile sound transmission spell is done. If she doesn''t, she can fly over by herself. Although the muddy sky star is big, it takes only a little time for a great master to go around.


    Then there is the third new product. This time, what is on the tray is only a mini sword polished with spirit stone.


    "What is this? It looks like a magic weapon." Yanyun Songzi glanced at it.


    Tang Junhao, who already knew the truth, smiled mysteriously: "this is indeed a magic weapon, but to be exact, it is only a part of the magic weapon. The truly complete magic weapon is too big to put here."


    "How big is it?" Xiao Jin showed an excited look.