I, a Full-Level Human Cub, Was Exposed by My Sister!

Netizen: Damn it? Your brother actually won first place in mountain biking and cross-country at the age of three? Protagonist's sister: This liar, he actually said he didn't know how to ride a bicycle, so I was late and was fined?? Netizen: What? Your brother participated in a technological innovation competition when he was six years old and built a rocket model that can automatically position itself and return after launch? Protagonist's sister: What a big liar. He said he was not good at studying and asked me to help him with his homework╥╯╰╥? Netizen: It's too exaggerated. When I was nine years old, I was using water to clear mud, and he built a low-altitude hover car for my sister's wish. Look how happy they are as brothers and sisters. Protagonist's sister: **! I sat on it for a while, then drove me down and took my neighbor's sisters to play for a day. Netizen: Lan Lan, your brother is so kind to you, with envious eyes. Protagonist's sister: Don't believe him, he is a big liar, he is really not as good as you think. Best friend: I don't allow you to say that about my brother. Please call me sister-in-law from now on. Protagonist's sister:? ? ? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.