The fairness of search engines is questioned, did CCTV expose fairly?

Baidu manually intervenes in search results, and Google also blocks negative news about Lee Kai-fu's tax evasion. A hospital exposed by CCTV for Baidu's unfair bidding ranking is another inconceivable幕后black hand. The fairness of search engines is questioned, is the exposure by CCTV fair? There are many disputes online, with screenshots as evidence.