What are the three songs that Uncle Zhou sang lightly when his wife got Alzheimer's disease?

It should be a bangzi. Mo Qi (played by Zhou Bobo) performed the double spring for the first time in 1989 CCTV Spring Festival Evening. He used this tone in many plots of the play, and so did the part playing the double spring. The words are tv.cn/enttv/yijibajinianchunwan/classpage/video/20091209/101441.shtml.