叫我九哥对你笑
[jiào wŏ jiŭ gē duì nĭ xiào]
'Call Me Elder Brother Jiu and I'll Smile at You': In Chinese culture, using familial terms like brother or sister is casual but shows respect among peers or acquaintances. Here it denotes a lighthearted approach towards relationships, presenting oneself friendly and easygoing when addressed by such titles.