I won't lose, and I can't lose

As Eiland walked out of the hall, Zhang Meng came over and asked with a smile, "Hey, what did Grandpa Lin say to you?"
Eiland knocked Zhang Meng on the head and rolled his eyes, "I am older than you and I am still your instructor. Even if you don't call me instructor outside, you should at least call me brother, right?"
"Hate!"
Zhang Meng touched her head and looked stern. With her personality, she was prepared to ignore Eiland, but she was curious and wanted to know what Lin He and Eiland...