Tang Yali, the heroine of the TV series "How Far Is the Way Home", strayed into pyramid schemes. At that time, if her friend Xi gave birth to her son Youyou, she gave her milk powder to Youyou, but the milk powder was fake, which led to her stunted development, unable to walk or talk. After being released from prison, Tang Yali actively treated and trained Youyou to atone, and finally Youyou's disease was cured.