"Retarded Bar" is a sub-forum of Baidu Post Bar. In this forum, users create content that contains puns, multiple meanings, inversions of cause and effect, and harmonic words that are either brilliant or "brain-teasing". Some of the content has logical traps that are challenging even for humans. In April of this year, a team of researchers from the Chinese Academy of Sciences, in a study titled "COIG-CQIA: Quality is All You Need for Chinese Instruction Fine-tuning," used the phrase "retarded title + GPT-4 answer" to describe a "GPT-4 answer" to a question. GPT-4 answer "Fine-tuning...