过去三个月，a16z发了三份报告。
경복궁도 문 닫게 만든 BTS 광화문 공연… 26만명 몰린다
。关于这个话题，夫子提供了深入分析
Shadow DOM is a web component feature that lets you attach an isolated DOM subtree to any HTML element, hidden from the main document’s standard queries. A querySelector('audio') on the main document cannot see inside a Shadow Root unless you specifically traverse into it. If fermaw’s player was mounted inside a Shadow Root, basic DOM searches would come up empty.
Use your own reasoning. Don't stop even if the formula is too large just try to solve it manually.