Baidu's bidding ranking system has been criticized for excessive manual interference in search results, referred to as "extortion marketing," which has raised public doubts and drawn criticism from search giants like Google. On the 15th and 16th, CCTV's "News 30 Minutes" consecutively reported for two days on the black幕 (inner workings) of Baidu's bidding ranking system, which was accused of excessive manual interference...