Huo Yanyi's words made Fang Xishui speechless at all, she had already considered the question he raised before, because she was afraid that it would deteriorate and not be fresh, and it would also cause the effect behind the mask to deteriorate because it was not vacuum packed. So she usually makes it today, and then quickly lets people use it tomorrow, but the storage time is very short, so others can't buy a lot at once.

Fang Xishui bit his lip in embarrassment, not knowing what to do.

She knew that the masks in later generations were completely sealed after vacuum packaging, and they could be stored for a long time because they added a lot of chemicals and the like, but in these years, even if there were those chemical materials, she didn't know which chemicals to add.

That's what gives her the most headache.

Huo Yanyi originally only asked to take a look at the mask because he was curious, and then said the problem very bluntly. But he didn't expect that this might hurt a girl's self-esteem, so he quickly reversed it and said, "That...... I didn't mean to say what you are doing, I just asked the question. ”

"I know what you mean, but I don't know anything about chemistry, and I know that I need to add some chemicals to make the mask work better, but ...... I don't know which ones to add, and besides, I have to find manufacturers for those vacuum-packed bags, and they won't get them, so it's very troublesome. ”

"Or you can let me try." Huo Yanyi cautiously asked, "I'm usually quite interested in studying these things in chemistry, so if you don't mind, let me take this thing back, and I'll see what can be stored longer." ”

Fang Xishui was so surprised that he looked at him with light in his eyes. I didn't expect her to be so awesome at the same table that she could still get this thing.

Zhang Mengmeng, who was not far away, turned around and looked at the two people behind him talking happily, and smiled when she thought of something.

Fang Xishui she ...... If Jin Suli sees it like this, then she won't be able to wash it even if she jumps into the Yellow River.

She wanted to match them, and seeing that the two of them were chatting so happily, she probably fell in love and fell in love.

So the two of them are together, Jin Suli, isn't it hers?

Zhang Mengmeng thought of this, and her face smiled like a flower.

……

Photo studio.

Su Anliu saw that there were no guests now, so he took out his notebook and prepared to write down the basic formulas. Then do some practice questions, these practice questions were given to her by Fang Xishui yesterday, and they are basically entry-level questions.

But Su Anliu has no foundation at all, and it is a headache to rely on the foundation of his six years of primary school to do these problems, and it took him a long time to solve a problem, and he still doesn't know what is right or wrong.

Su Jincheng only came to this photo studio in the afternoon, and when he entered the door, he saw what Su Anliu, the village girl, was writing there, and he was startled when he saw that the village girl was still writing, he thought she was not reading.

After all, now that everyone is starting school, she didn't go to class, so isn't that just that she can't afford to read?

He leaned over to take a look, and when he saw the woman's writing, he burst out laughing.

She looks like an 18-year-old, right? Although he looks small, he is also here at this age, and he can't be a primary school student, so how can he do this kind of junior high school topic.