Su Qingluan looked down at her sister who was clutching her sleeve tightly, then looked up at Mu Xingzhi, smiling a bit servilely: "Um... Mu Xingzhi, Mr. Mu, can I trouble you with something?"

Mu Xingzhi's eyes flashed with a hint of amusement, and he pretended to be confused: "What's the matter?"

Su Qingluan looked up and found that the person in front of her was pretending to be stupid, obviously there to laugh at her. So she couldn't help but glare at him unhappily. Just as she was about to say something sarcastic, her thoughts were interrupted by her sister's soft sobbing.

"Sister... where is this? This is not our home, I'm so scared!" Children have not yet established a complete psychological defense line, and they are more "afraid of the dark" and "stranger". The physical discomfort when they are sick will amplify this feeling and make people even more uneasy.

Su Qingluan patted the little girl's back and coaxed her softly: "Don't be afraid, Xueyan. Xueyan is sick, so let's go see the doctor. This is the doctor's home..."

Seeing that Su Qingluan was busy coaxing her sister and had no time to chat with him, the "doctor" gave up teasing Su Qingluan and turned around to pour some clean water for the little girl.

Su Qingluan's voice came from behind: "Please add a little salt and sugar!"

"Oh? Why?" Mu Xingzhi turned around and asked.

"The little girl had a fever and was sweating a lot just now. I'm worried about her... Well, you should replenish what you lack. If you lack salty food, add salt."

In fact, Su Qingluan originally wanted to say, "I'm afraid he has electrolyte imbalance," but the same thing happened. Su Qingluan could explain what electrolytes were, but she had no way of explaining to the other party how she knew this "strange" knowledge that was so strange to people at that time.

Of course, the greater possibility is that Mu Xingzhi, just like he did in the past when he noticed something was wrong with her, tried to probe her a little, and when he saw that she was unwilling to say anything, he pretended to be ignorant and stopped asking questions.

However, for some inexplicable reasons, Su Qingluan still wanted to keep the deepest secret of "time travel", which would give her a sense of psychological security.

"But sweat isn't sweet?" Mu Xingzhi's expression clearly showed that he didn't quite believe what Su Qingluan said.

"...Children like to drink sweet things..." Unable to come up with any decent excuse, Su Qingluan started talking nonsense.

Although Mu Xingzhi knew that Su Qingluan was not telling the truth, he didn't know why she did this. However, given Su Qingluan's usual unpredictable feeling, he still did as she said.

However, Mu Xingzhi did not add sugar and salt to the water. Instead, he took the sugar jar and the salt jar and let Su Qingluan add them herself.

Su Qingluan looked at the glass of water that Mu Xingzhi brought, thought for a moment, and then looked at the size of the small spoon used to hold salt and sugar. She put half a spoonful of salt in it, and then two and a half spoonfuls of sugar in it, stirred it, and handed it to her sister: "Here, this is for you to drink. You just sweated a lot, it will be good for you."

Even though Su Qingluan often played tricks on her younger siblings, she felt embarrassed to lie to the little girl that this thing was "delicious". To put it bluntly, if it weren't for its salt-replenishing function, even a dog wouldn't drink it.

Because of the lighting, the little girl couldn't see clearly what the elder sister added. She thought that everything the elder sister made was delicious anyway, so she gulped down two big mouthfuls without thinking, and in an instant the whole tea bowl of salt solution was gone.

But this thing was sweet and salty, and it didn't taste very good even for adults, let alone a three-year-old child. The little girl immediately pouted and wanted to cry, complaining tearfully, "Sister, you're lying! This water doesn't taste good at all!"

Su Qingluan feigned innocence: "I just said 'drinking it has benefits', but I never said it tastes good."

"Puchi." This was probably the first time Mu Xingzhi saw someone acting like a rogue in front of a little kid who was over three years old. He was really surprised and couldn't help laughing out loud. As a result, he scared the only real child present.

"Sister!" Su Xueyan no longer cared about complaining about her sister's bad intentions. She huddled her small body in Su Qingluan's arms and said fearfully, "There's someone! It's not Dad or Mom!"

"Didn't we say we were going to the doctor's house to treat you?" She coaxed her sister a few more times. After all, Su Qingluan, her elder sister, was still "reliable" in Su Xueyan's little heart. Besides, she was still sick after all. After all, after all the fussing, the energy that she had regained through sleeping was quickly consumed, and the little girl became listless again.

Su Qingluan was afraid that her sister would fall asleep again and it would be difficult for her to walk. While Su Xueyan was still sweating from waking up, she immediately hugged her and said, "Don't be afraid. I'll take you home now, okay?"

When she heard that she was going home, the little girl became even more obedient. She obediently let Su Qingluan wrap her up like a little dumpling.

After Su Qingluan finished packing her sister, she sincerely thanked Mu Xingzhi: "I'm sorry to bother you so late at night. I won't say any more polite words today. I'll get you a thank you gift tomorrow."

"A thank you banquet?" Mu Xingzhi teased.

"..." Su Qingluan felt guilty: the promised thank-you banquet seemed to be getting further and further away. However, she shook her head: "It's not this kind of thing. It should be more useful to you." Then she hugged her sister and prepared to go out again.

After taking two steps and remembering something, Su Qingluan turned around and said, "You don't have to come out to see me off."

"But what about the lock on the front door?"

Su Qingluan: ...She was careless! She forgot that after she left, Mu Xingzhi had to put the bolt back in his wheelchair!

"Then...what should I do? Song Bo is not here..."

Seeing Su Qingluan's face almost wrinkled into a chrysanthemum bun, Mu Xingzhi said with a smile: "I'm kidding. Since we have made a machine that can open the door by itself, naturally there will be one that can lock the door by itself."

In order to prevent Su Qingluan from not believing it, Mu Xingzhi demonstrated it again in front of Su Qingluan.

Su Qingluan, a liberal arts student with zero engineering skills, had a confused and impressive expression throughout the whole process. Then she realized something and turned to glare at Mu Xingzhi: "Then why did you ask me to lock the door just now?!"

Although she could do the job, the door bolt was really heavy!

Mu Xingzhi laughed and said, "My sweet dream was disturbed for no reason. Am I not allowed to return the favor?"

"I'll go to hell!" Su Qingluan said this in a bad mood, then turned around and left with her sister in her arms.

Mu Xingzhi sat in a wheelchair and watched Su Qingluan's small figure gradually disappear into the night. He slowly locked the door, but did not go back to the room to rest immediately. Instead, he sat in the yard in a daze.

There was a moment today when he actually wanted to tell Su Qingluan his real name and identity - of course he knew that he just "wanted" but would never "can't help but say it." There was a huge gap between the two.

Su Qingluan himself had no idea of ​​this at all - because he didn't show any sign of it.

But even so, just having this thought was a huge loss of composure for Mu Xingzhi himself - this meant that his vigilance against Su Qingluan was decreasing.