I still remember that when I was young, he always protected me like a brother, and I always followed him and called him Brother Yaya, and he would always turn around and give me a smile. He called me Yaya, and I asked why? He said that because I called him Brother Yaya, Yaya and Yaya would never be separated, and I laughed at that time. We have not seen each other since Brother Yaya moved, maybe he has forgotten me, maybe he is also thinking of me somewhere on the earth. My Yaya brother, are you okay?