What does 还要 mean in this sentence? "释然啊，你现在心里在想什么，我恐怕比你还要清楚。" 大家好！

What does 还要 mean in this sentence?  "释然啊，你现在心里在想什么，我恐怕比你还要清楚。" It was in a Chinese novel that I was reading called 释然的修行.
Thanks!
“还要” is used to express a high degree. This sentence means I know more about your desires than you do.