GUANGZHOU, China, March 8, 2024 /PRNewswire/ -- Yatsen Holding Limited ("Yatsen" or the "Company") (NYSE: YSG), a leading China-based beauty group, today announced that, it will change the ratio of its American depositary shares ("ADSs") to its Class A ordinary shares (the "ADS Ratio") from one (1) ADS representing four (4) Class A ordinary shares...