The last weekend before the summer break. In the morning, Blue Feather walked on the way to the library.

She didn't look back, trying to avoid the ringing bicycle, and leaned to the side of the road to continue walking. "Jingle Bell Bell" Hey! The bicycle bell was really tireless, why was it still ringing when it gave way, and she glanced back.

"Hey, it's you!" It turned out that it was Ivan who was holding a bicycle in each hand and pushing and chasing her. Lan Yu was surprised and asked:

"Where did you get those two bikes?"

"Don't you want it?" He doesn't answer directly about his intentions.

"It's a vacation, what are you doing with your bike?"

"You don't understand this," he deliberately made a mysterious expression: "Come here, ride on." ”

"I'll take you somewhere, and I'll tell you later."

After a semester of hard work, they developed three sets of experimental plans.

Because, the remaining year before graduation is to devote yourself to it.

Whether the experimental results will be satisfactory depends on whether all the chemical reagents involved in the protocol are available.

If the school laboratory can't provide it, they have to get it themselves.

Also, according to the needs of his mission, Ivan planned to use the same experimental protocol, adding an additional class of mineral analysis tests, and Blue Feather happily accepted the challenge.

At this moment, they drove to the school's experimental center.

The director of the center took them to check the analytical instruments required by the experimental plan, and the results were okay, the instruments and equipment were still perfect, but the accuracy of individual equipment was somewhat unsatisfactory.

"Well, it doesn't matter, we can use the traditional test method and do the comparison test."

He always has a way, so that he has a bottom in his mind about the problem of experimental equipment.

"Okay, about preparing reagents, I'll tell you a good way to get the best of both worlds,"

Walking out of the experimental center, he finally relaxed, but he was still worried about the lack of reagents that Lan Yu was responsible for, and it seemed that he had also taken countermeasures in advance, he said:

"This holiday, we can travel by bicycle and replenish chemical reagents. However, isn't it wrong that you don't go home for two consecutive holidays? ”

"Homesickness is a sure thing. However, if I get excellent results in the subject instead of sacrificing a vacation, wouldn't everyone be happy? ”

Although Lan Yu said so, she was saying in her heart that in fact, she would prefer to have another unforgettable vacation with him. Ivan looked at her with pity and said:

"Actually, you should be like other little girls, you don't have to be so fast-paced and so hard to learn, you should also be like them, have romance and leisure, and love."

"Don't be so sentimental, it's not like you." Lan Yu deliberately diverted the topic: "

And the sun is shining on the head. Lan Yu pointed to his stomach and let the family hear the gurgling. He was embarrassed at this time, and immediately put away his uneasy expression and said:

"Oh, I forgot, I have to go to the cafeteria for lunch."

They had lunch, Lan Yu was a little tired, she hoped that he could rest, so she deliberately lengthened the voice:

"Sir, do you have any more homework today?"

"That's right, now, there is the most important one, to set off to the lotus pond in the northern suburbs!"

"Ahh Why didn't you say it earlier! ”

Hearing Ivan's words, Blue Feather almost jumped up with joy, she was so excited that she got up her bike and rode in front.

"Hey, slow down!"

Ivan hurried to catch up. They were riding on the quiet northern suburb road, his right hand had been on the steering wheel of the bicycle that Lan Yu was riding, and looking at his expression, it seemed that only in this way could he ensure that Lan Yu rode steadily and safely.

After more than an hour of riding, they arrived at the lotus pond in the northern suburbs.

It is now the end of spring and the beginning of summer, the lotus leaves and flowers of Bitang are beginning to bloom, the warm breeze is blowing, and the scenery is pleasant. They sat on their chairs by the pond and talked endlessly. In fact, the two of them tacitly knew that this innocence was accompanied by sad sorrow, so they didn't dare to say love lightly.

The lotus pond in the evening has just climbed up in the sky like a poignant bright moon, and the lake surface sends wisps of fragrance with the breeze.

Accompanied by Ivan's guitar plucked chords, the touching melody softened their hearts.

Looking at the lotus pond in the night light, Lan Yu's eyes appeared in front of Zhu Ziqing's "Moonlight on the Lotus Pond", and in this situation, her whirlwind unfolded vividly:

The moonlight poured silently on the leaves and flowers like flowing water. A thin green mist floats in the lotus pond, and the leaves and flowers seem to have been washed in milk, like a dream wrapped in light veil.

Listening to the soft string sound, Lan Yu never let go of the future hanging in his heart, the tearful farewell scene that will inevitably happen one day, I don't know when, suddenly I have to face the moment of saying goodbye ruthlessly.

Ivan and Lan Yu's date, there was no hand-holding, no snuggling, and no tender whispers from me.

However, tonight's scene, once upon a time, was the only closest and tenderest part they could recall.

It was already late, and they were reluctant to leave the lotus pond in the northern suburbs

Taking advantage of the vacation for more than 20 days, Ivan and Lan Yu went to the north and south, and the reagents were finally collected, but the preparations still need to be continued.

"In the actual test results, there are a few things that are not pure enough to meet the requirements, which will lead to wrong test results, you see." Lan Yu handed him the test report.

"These are six varieties, are there any more?"

"Everything else is qualified, but these six drugs are not qualified."

"Have you considered alternatives?"

"We have already considered it in the experimental plan, and when we collected the reagents later, basically because of the shortage of reagents, there were only single varieties left."

"Can we purify it ourselves?"

"You can only use the traditional method, so isn't it very tight on time?"

"It's a little tighter." He still had a somewhat anxious expression.

"Give me a day, and I'll find some support."

The next day, the results were there.

Ivan's classmates at the sister university, from their laboratory, turned over the inventory to replenish the four reagents, and now can use their own purification method to dispose of the remaining two medicines.

They went back to the lab classroom of their freshman and sophomore years. Looking at these bottles and cans that had been used, I remembered that when I first partnered with Ivan to learn the essentials of basic experiments, Lan Yu still often found problems for Ivan.

If Ivan hadn't deliberately taken a gradual approach to her interest in these experiments, she would have abandoned them and switched to another major.

"I think of the year when I first entered the school, there were so many boys chasing you, you were often in Cao Ying's heart in the laboratory, remember?"

He has no lack of desire to be happy, if in the past, Lan Yu would use a poisonous tongue to forgive people, but now she has a fever on her face unconsciously, and she can't wait to find a crack in the ground to get into:

"You're making fun of me?"

"No, in fact, your mood at that time should be much more relaxed and happier than now." He thought about it, as if he wanted to say from the bottom of his heart:

"You are a beautiful and kind girl, your self-motivation and magnanimous style are very touching and infectious, and a gentle and pure girl like you deserves a lifetime of happiness."

It seems that he has never been able to let go of how he is going to leave her.

His heart hurts, his heart weeps.

Lan Yu secretly thought about how to help relieve the heavy load in his heart, but he never found the right words and phrases.

As they spoke, they installed the purification device and started the first reagent purification operation.

It looks like they have to wait in shifts.

"I'll do all the waiting, you haven't had a good rest this holiday, and girls have to have time to tidy up their space, go back quickly."

He said it so considerately, Lan Yu had no reason to fight with him.

Hehe, it's rare to have time for yourself.

Lan Yu returned to the dormitory, cleaned the suitcase and bed thoroughly, and saved up a lot of clothes to change, and it took her a whole day to wash them.

Oh, there's still Ding Zhen's handkerchief to be returned.

Lan Yu washed the handkerchief cleanly, folded it neatly and put it in his schoolbag, and returned it to him when he met Ding Zhen.

There is also a photo.

This is a group photo in the snow in the Great Northwest, it is Uncle Ji, Saihu and Xiaohu, and Ivan, she is standing next to Ivan. In the photo, she is wearing the red wool scarf that Ivan personally put around, long and warm, but unfortunately the fiery red and gorgeous color cannot be seen in the photo.

Sandwiching the photos in the book "Experimental Operation Guide", Lan Yu calculated that in the next few days, she would have to spend time on duty in the experimental classroom, and she could often take it out and take a look.

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