Kim Tae-hyun called his sister-in-law's phone when he left the company, and after asking about today's class time, Kim Tae-hyun went home to pick up Yeon-yeon and go to Brother Xu's house together.

"Oppa, you said that I prepared a gift for the little sister, will the little sister like it?" Yeon-yeon was holding a big doll in her hand and asked Kim Tae-hyun with some unease.

"Of course, this young lady likes Frog Juncao the most, Yanyan can give her favorite Frog Juncao doll to the young lady, of course the young lady will be very happy!" Kim Tae-hyun replied.

Originally, Kim Tae-hyun thought that Yeon-yeon should have prepared a gift for Seo-hyun after choosing it for so long last night, but who knew that Yeon-yeon was still choosing a gift when Kim Tae-hyun came back from the company. In the end, Kim Tae-hyun remembered that Seo-hyun liked sweet potatoes and frog Juncao the most, and it was not appropriate to give sweet potatoes, so Kim Tae-hyun mentioned Yì to give frog Juncao a doll, and then Yeon-yeon decided to give her favorite frog Juncao doll to Seo-hyun, and the reason why Yeon-yeon wanted to give her favorite doll was because Yeon-yeon felt that this was the most sincere.

"Oppa, how old is that young lady?" After Kim Tae-hyun took Yeon-yeon to Seo-hyun's community and got off the bus, Yeon-yeon asked a little nervously.

"Inside, that young lady should be 11 years old this year, 5 years older than Yanyan." Kim Tae-hyun thought about Seo-hyun's date of birth that he had seen in his previous life, and then did the math before answering Yeon-yeon's question.

"Inside, it turns out that the young lady is so old, she is five years older than Yanyan, so if I have a conflict with the young lady, won't I suffer a lot if I fight with the young lady?" Yeon-yeon said to Kim Tae-hyun with a frown.

"Do you still look like a girl? How to introduce a friend to you, the first thing you think of is a fight! Kim Tae-hyun said with black lines on his head.

"Who said I thought of fighting first! Didn't I prepare a gift for my little sister! It's just that Soenoni told me that only by knowing oneself and knowing oneself can we defeat the enemy, although the young lady is not an enemy, but what if I have a conflict with the young lady one day? I'm so young, I'm sure I can't beat the little sister, no, when Soenoni comes back this time, I'm going to let Soenoni teach me how to beat a kid who is 5 years older than me. Yeon-yeon began to talk to herself as she spoke.

"Yanyan, first of all, I promise that the young lady will not fight with you, and secondly, as long as you get along with the young lady well, how can you have conflicts! So you give up your plan to go home and learn a few tricks from Kim So-eun! "Kim Tae-hyun can't beat and scold Yeon-yeon now, even if he scolds him, Kim Tae-hyun himself is reluctant to do this, Kim Tae-hyun can only reason with her.

"Okay, I'll get along with my little sister well, as for whether I want to go home and learn a few tricks from Soenoni, I'll wait until I see." Yeon-yeon thought about it after listening to Kim Tae-hyun's words.

Kim Tae-hyun tried to correct Yeon-yeon's outlook on life and values along the way, and it didn't take long for the brother and sister to arrive at the door of Seo-hyun's house, and after Kim Tae-hyun rang the doorbell, he heard a sound of footsteps, but the footsteps stopped when they reached the door, perhaps to determine whether the person came from the cat's eye or not.

"Taehyun oppa, hello!" After a while, it was Seo Hyun who opened the door, and after Seo Hyun greeted Kim Taehyun, he looked at Yeon-yeon next to Kim Tae-hyun curiously, and Yeon-yeon also looked at Seo-hyun curiously.

"Xiaoxian, who's here!" At this time, Sister-in-law Xu's voice came out of the house.

"Inside, it's Taehyun oppa here!" Xu Xian replied.

"Oh, it turned out that Taehyun was here, you kid is really, you Taehyun oppa didn't invite someone to come in and sit when he came, and let the family stand outside all the time." Sister-in-law Xu came to the door as she spoke.

"Hello sister-in-law, I'm coming to class." Kim Tae-hyun said after seeing Sister-in-law Xu come out.

"Oh, isn't this Yeon-yeon? Taehyun, did you bring Yeon-yeon? After Kim Tae-hyun finished speaking, Sister-in-law Xu saw Yeon-yeon next to Kim Tae-hyun before she could say anything, so she asked.

"Inside, didn't I go home after filming outside for more than a month, and I haven't seen Yanyan for more than a month, and this time I have to go back to the crew in a few days, so I brought Yanyan to class with me. I'm sorry if I bother you. Kim Tae-hyun explained.

"Don't bother, you see Yanyan is so cute, it's too late for me to like it, how can I be bothered!" Sister-in-law Xu said with a smile.

"Then thank you sister-in-law, Yeon-yeon, call Auntie, no, it's better to call" Yeon-yeon What should she call Sister-in-law Xu This made Kim Tae-hyun difficult, Kim Tae-hyun himself called the Xu family and his wife his brother and sister-in-law, but asked Seo-hyun to call himself oppa, and now Kim Tae-hyun didn't know what to call Yeon-yeon.

"Don't be embarrassed, just like you and Xiaoxian have their own opinions, Yanyan, just call me Aunt Xu." Sister-in-law Xu also saw Kim Tae-hyun's embarrassment, so she spoke first.

"Hello Aunt Xu, my name is Kim Tae-yeon, you can just call me Yeon-yeon." Although Yeon-yeon, the little girl, was driven crazy by Kim So-eun, the little girl was still very polite when facing the elders.

"Nei, Yanyan is so good, let's go in first." Sister-in-law Xu said and led Yanyan in first. Kim Tae-hyun found out that Seo-hyun puffed up her bun face as she watched her mother's back leading Yeon-yeon into it, and Kim Tae-hyun couldn't help but laugh when she saw Seo-hyun's cute appearance.

"Taehyun oppa, it's not good to laugh at people like this." Seo Hyun thought Kim Tae-hyun's smile just now was a mockery of himself.

"Inside, I'm not laughing at you, it's just that the way you get angry is so cute, I can't help but laugh." Kim Tae-hyun didn't dare to make any jokes about the persistent girl Seo-hyun, so he hurriedly explained.

"Ne, I see." To be angry is to be angry, and Xu Xian will not defend it for this.

"Sister-in-law, this is the Korean beef I saw on the road for sale, I thought this meat was okay and bought some." Kim Tae-hyun handed the Hanniu he had prepared to Sister-in-law Xu.

"Taehyun, forget it this time, but don't buy anything in the future, or don't come." Sister-in-law Xu pretended to be angry and said.

"Ne, I see." Kim Tae-hyun agreed.

"Yanyan, this is the young lady I want to introduce to you." Kim Tae-hyun looked at Seo-hyun and said to Yeon-yeon.

"Hello young lady, my name is Kim Taeyeon, you can call me Yeonyan, this is my gift to you as a first meeting." After Kim Tae-hyun finished speaking, Yeon-yeon handed the doll she was holding to Seo-hyun and said.

"Hello Yeonyan, my name is Seo Joo-hyun, I'm glad to meet you, but your gift is too expensive for me to accept." Xu Xian still said with a glance, but he didn't accept anything about the doll that Yeon-yeon gave him.

Yeon-yeon saw that the young lady she had just met refused to accept the gift she had given, and looked at Kim Tae-hyun with some frustration.

"Sister-in-law, this is a piece of Yeon-yeon's heart, after I told Yeon-yeon yesterday that I would introduce her to Xiaoxian today, Yeon-yeon has been preparing gifts since last night, and it was only when I went out today that I decided to give my favorite doll to Xiao-hyun." Kim Tae-hyun knew that no matter what he said to Seo-hyun, it would not make sense, so he could only open a breakthrough from Seo's sister-in-law.

"Xiaoxian, since it's my sister's intention, you can accept it! Wait for tomorrow Mom to accompany you to pick out a gift for your sister, and wait for your sister to give it to her next time. Sister-in-law Xu persuaded Xu Xian.

"Ne, okay then, thank you Yeon-yeon!" Seo Hyun said after taking the doll in Yeon-yeon's hand.

"Hehe, I'll call you Zhu Xian Oni in the future, okay?" Yeon-yeon said happily after seeing Seo-hyun take the doll.

"Inside, of course you can." Xu Xian also said with a smile.

"Taehyun, how much do you know about music theory?" After Sister-in-law Xu saw that Seo-hyun and Yeon-yeon could get along well, she asked Kim Tae-hyun.

"During this time, I read some books on basic music theory and got a general understanding of some basic music theory basics." Kim Tae-hyun thought for a moment and replied.

"Can you read music easily?" Sister-in-law Xu continued to ask.

"It's pretty much the same, but I don't have anyone there to correct my pitch." Kim Tae-hyun said.

"Okay, we're here to help you read music today, it's very important to learn to play the piano and read music, and you need to practice a lot after you can read music, and the specific level you can reach depends on your personal talent and hard work. But I heard you Brother Xu say that the reason why you learn to play the piano is to learn composition, so it's best to practice sight-singing and ear training to cultivate your sense of tone. Sister-in-law Xu explained.

"Inside, then it will be more troublesome sister-in-law." Kim Tae-hyun said. From Sister-in-law Xu's words, Kim Tae-hyun can also hear that Sister-in-law Xu has some understanding of composition.

"Alright then, let's go to the piano room to help you read the music first." After Sister-in-law Xu finished speaking, she took the Kim Tae-hyun brothers and sisters and Seo Hyun to the piano room.

Next, Sister-in-law Xu began to help Kim Tae-hyun read music, Kim Tae-hyun is basically familiar with the basic knowledge of music reading, but Kim Tae-hyun can't find the sound, that is, he can't distinguish the 12345670 of these sounds, and Sister-in-law Xu is now helping Kim Tae-hyun find the right sound. When Seo's sister-in-law helped Kim Tae-hyun find a voice, Yeon-yeon sat on a bench with Seo-hyun and watched curiously, and Yeon-yeon also sang along when Kim Tae-hyun sang.

"Taehyun, I think Yeon-yeon can sing better than you!" Sister-in-law Xu joked with a smile.

"Inside, I'm working hard too." Kim Taehyun said with some embarrassment.

"Okay, now you have almost mastered the score, I'll give you a simple score, you can play according to this score, and then practice more difficult when you are proficient, so the difficulty increases in turn, just keep practicing." After Sister-in-law Xu finished speaking, she took out a simple sheet music and played it on the piano to show it to Kim Tae-hyun, and then Sister-in-law Xu watched Kim Tae-hyun play for a while and then went to prepare dinner, and there were only three people left in the piano room, Kim Tae-hyun and Seo Hyun.

"Taehyun oppa, your hand shape is wrong, it should be like this!" Seo Hyun watched Kim Tae-hyun play for a while, and couldn't help but correct Kim Tae-hyun's hand shape, and after finishing speaking, he also demonstrated the standard hand shape on the other side of the piano.

"Inside, Xiaoxian, don't you notice that every pianist has a different hand shape? This shows that if you want to be a true master, you have to be informal! Kim Tae-hyun defended Seo-hyun.

"Hee-hee, oppa is not shy, Aunt Xu also said that Yanyan is better than oppa! OPPA still wants to be a master!? Yeon-yeon debunked on the side.

"Inside, Yanyan is more powerful than oppa, then oppa is a master, Yanyan is a great master!" Kim Tae-hyun said as she hugged Yeon-yeon into her lap.

"Xiaoxian, what piano music do you play now?" Kim Tae-hyun played the score for a while, and asked Seo-hyun on the side a little boringly.

"I can only play simple tunes like "The Secret Garden", "The Blue Danube", "To Alice", etc., but I am not very proficient." Xu Xian replied seriously.

"Inside, then Xiaoxian, come and play a song for me and Yanyan! Applause welcome! After Kim Tae-hyun finished speaking, he got up and left the bench and applauded, and Yeon-yeon also applauded.

"Alright then, I'll play 'To Alice.'" Xu Xian also came to the piano and sat down without stage fright, took a breath and began to play.

While Seo Hyun was playing, Kim Tae-hyun also took the score and listened carefully while reading it, and until the end of the song, Kim Tae-hyun didn't find any mistakes in playing, although there were not obvious pauses in some places. However, there may be something wrong with the play, but Kim Tae-hyun is limited in his current level and can't hear it.