Question: How many episodes does the South Korean television series at which Jung Eui-chul reached the peak of his career have? 
Sentence (from "Jung Eui-chul"): He made his acting debut in the drama Biscuit Teacher and Star Candy as a student and gained positive response in 2005 and later landed on many supporting roles including the award-winning films such as Five Senses of Eros and popularity based novel film "Do Re Mi Fa So La Ti Do".
Relevant evidence: No